Synonyms for Prohibit: 30 Alternatives, Meanings, and Examples

Imagine a sign that says, “No phones allowed.” In simple English, prohibit means to officially forbid an action or activity.

You may see prohibited in laws, school rules, workplace policies, and safety notices. Alternatives such as ban, forbid, and restrict can fit different situations.

Some alternatives have nearly the same meaning, while others express limitation or prevention. Knowing these differences helps you choose the right word for clear, natural writing.

Quick Answer

The closest common synonyms for prohibit are ban, forbid, disallow, bar, outlaw, and proscribe. Formal or legal alternatives include interdict, enjoin, and debar in specific contexts.

Words such as restrict, prevent, limit, restrain, constrain, and preclude are close alternatives rather than exact synonyms because they can express limitation or prevention without necessarily imposing a complete prohibition.

30 Alternatives to Prohibit

The list below separates true or strong synonyms from close alternatives, context-specific terms, related words, and useful expressions. This avoids treating every word as an exact synonym.

Word or Expression	Classification
Ban	Direct synonym
Forbid	Direct synonym
Disallow	Direct synonym
Bar	Strong context-specific synonym
Outlaw	Legal synonym
Proscribe	Formal synonym
Interdict	Rare formal/legal synonym
Enjoin	Legal alternative
Debar	Formal context-specific alternative
Restrict	Close alternative
Prevent	Close alternative
Limit	Close alternative
Restrain	Close alternative
Constrain	Close alternative
Preclude	Close alternative
Curb	Related alternative
Inhibit	Related alternative
Block	Context-specific alternative
Stop	Broad alternative
Halt	Context-specific alternative
Suppress	Context-specific alternative
Regulate	Related alternative
Veto	Context-specific alternative
Refuse permission	Useful expression
Not permit	Useful expression
Keep from	Useful expression
Prevent someone from	Useful expression
Withhold permission	Useful expression
Make illegal	Legal expression

Definition and Meaning of Prohibit

Prohibit means to officially forbid an action, activity, or practice or to make it not allowed.

Part of speech: Verb

Simple example:
The school prohibits students from using phones during exams.

The noun prohibition refers to an official rule, law, or action that forbids something.

---

Ban

Ban is one of the closest and most common synonyms for prohibit. It means to officially say that something is not allowed.

Examples:

• The city banned smoking in public parks.
• The school banned mobile phones during examinations.

Usage note:
Ban is common in everyday English and can refer to laws, rules, policies, or official decisions.

---

Forbid

Forbid means to tell someone that they must not do something or to officially say that an action is not allowed.

Examples:

• Her parents forbade her from driving alone at night.
• The doctor forbade him from lifting heavy objects.

Usage note:
Forbid often focuses on a person being told not to do something, while prohibition is especially common in formal rules, laws, and regulations.

---

Disallow

Disallow means to refuse to allow something or to officially declare that it is not permitted.

Examples:

• The website disallows posts containing certain types of harmful content.
• The competition rules disallow outside assistance.

Usage note:
Disallow is particularly common in rules, policies, systems, competitions, and formal decisions.

---

Bar

Bar can mean to prevent someone from entering, participating in, using, or accessing something.

Examples:

• The club barred him from entering the premises.
• The rules bar employees from using company equipment for personal business.

Usage note:
Bar is not a universal replacement for prohibition. It works especially well when the meaning involves preventing access, participation, or eligibility.

---

Outlaw

Outlaw means to make something illegal through a law or official legal action.

Examples:

• The government outlawed the sale of the substance.
• The country outlawed commercial hunting in the protected area.

Usage note:
Outlaw is specifically associated with making something illegal. It should not be used for every ordinary rule or personal prohibition.

---

Proscribe

Proscribe means to officially forbid something, especially through a law, formal rule, or authoritative decision.

Examples:

• The law proscribes the use of certain chemicals.
• The organization prescribed discriminatory practices.

Usage note:
Proscribe is formal and less common than ban or prohibit in everyday English.

Read More: Synonyms for Website: 18 Words You Can Use Instead

---

Interdict

Interdict is a rare and highly formal word meaning to prohibit, prevent, or officially stop something.

Examples:

• The court stopped the company from continuing the disputed activity.
• Officials interdicted the shipment under the applicable regulations.

Usage note:
Interdict is uncommon in modern everyday English and is mainly useful in formal, legal, ecclesiastical, or specialized contexts.

---

Enjoin

Enjoin can mean to officially order someone to do something or, especially in legal contexts, to order someone to stop doing something.

Examples:

• The court enjoined the company from using the disputed trademark.
• The judge enjoined the group from entering the restricted area.

Usage note:
Enjoin is not simply a general everyday synonym for prohibit. Its legal use commonly involves a formal court order.

---

Debar

Debar means to officially prevent someone from participating in something, entering a place, or receiving a particular opportunity.

Examples:

• The committee debarred the applicant from the competition for violating the rules.
• The organization debarred the contractor from future projects.

Usage note:
Debar is more specific than prohibited because it normally concerns excluding a person or organization from participation, access, or eligibility.

---

Restrict

Restrict means to limit what someone can do, use, access, or have without necessarily banning it completely.

Examples:

• The library restricts computer use to two hours per day.
• The app restricts access to certain features for younger users.

Usage note:
Restrict is not an exact synonym of prohibit. Something that is restricted may still be allowed under certain conditions.

---

Prevent

Prevent means to stop something from happening or to stop someone from doing something.

Examples:

• The security guard prevented visitors from entering the restricted area.
• The lock prevents children from opening the cabinet.

Usage note:
Prevent focuses on the result—something does not happen—whereas prohibit focuses on the rule or decision that says something is not allowed.

---

Limit

Limit means to keep something within a particular amount, range, level, or extent.

Examples:

• The school limits the number of visitors allowed inside.
• The company limits employees to two remote-work days per week.

Usage note:
A limit usually leaves some degree of permission. Therefore, limit is a close alternative rather than an exact synonym of prohibit.

Read More: Synonyms for Delectable: 15 Delicious Words to Use Instead

---

Restrain

Restrain means to hold back, control, or limit someone’s actions, behavior, or freedom.

Examples:

• The officers restrained the crowd from entering the building.
• The agreement restrains the company from sharing confidential information.

Usage note:
Restraint emphasizes holding something or someone back rather than establishing a formal prohibition.

---

Constrain

Constraint means to limit someone’s freedom, choices, actions, or possibilities.

Examples:

• A limited budget constrained the team’s choices.
• The contract constrains how the company can use the data.

Usage note:
Constraint often describes limitations created by circumstances, rules, agreements, or conditions. It does not necessarily mean that something has been formally prohibited.

---

Preclude

Preclude means to prevent something from happening or make it impossible because of a condition, action, or decision.

Examples:

• The late application precluded him from joining the program.
• The safety requirements preclude visitors from entering the area without protective equipment.

Usage note:
Preclude is a formal close alternative to prohibit, but it emphasizes preventing or ruling something out rather than simply declaring it forbidden.

---

Curb

Curb means to reduce, control, or keep something undesirable within limits.

Examples:

• The new policy aims to curb excessive water use.
• The campaign was designed to curb dangerous driving.

Usage note:
Curb normally means reduce or control, not completely forbid. It is therefore a related alternative rather than an exact synonym.

---

Inhibit

Inhibit means to make an action less likely, more difficult, or less effective.

Examples:

• Fear can inhibit people from speaking openly.
• The regulation inhibits the use of certain materials in the manufacturing process.

Usage note:
Inhibit emphasizes reducing or discouraging an action rather than formally forbidding it.

---

Block

Block means to stop someone or something from entering, moving, accessing, or continuing.

Examples:

• Security blocked unauthorized visitors from entering the building.
• The website blocked the account after repeated violations.

Usage note:
Block is a context-specific alternative. It often describes practical prevention rather than an official prohibition.

Read More: Synonyms for Potion: 30 Words for Magical and Medicinal Drinks

---

Stop

Stop is a broad verb meaning to cause an action, activity, or process to end or not continue.

Examples:

• The teacher stopped the students from fighting.
• The safety mechanism stops the machine from operating when the cover is open.

Usage note:
Stop is much broader than prohibit. It describes preventing or ending an action but does not necessarily involve a rule or official ban.

---

Halt

Halt means to bring an activity, process, movement, or operation to an end.

Examples:

• Officials halted construction after discovering a safety problem.
• The company halted production while engineers investigated the fault.

Usage note:
Halt describes stopping something already underway. It does not normally mean establishing a general rule against it.

---

Suppress

Suppress can mean to stop something from being expressed, published, revealed, spread, or made public.

Examples:

• The platform suppressed the post after identifying a policy violation.
• The government was accused of trying to suppress the publication of the report.

Usage note:
Suppress is context-specific. It concerns preventing something from being expressed, released, or made public rather than generally prohibiting an action.

---

Regulate

Regulating means to control something through rules, laws, standards, or official requirements.

Examples:

• The government regulates the sale of medicines.
• Federal rules regulate how companies store customer data.

Usage note:
Regulating does not normally mean completely prohibited. Regulation may allow an activity while controlling how, when, or under what conditions it occurs.

---

Veto

Veto means to officially reject or prevent a proposal, decision, or measure from being approved.

Examples:

• The president vetoed the proposed legislation.
• The committee vetoed the plan after reviewing its costs.

Usage note:
Veto is a context-specific alternative. It applies to exercising formal authority to reject a proposal or decision, not to ordinary prohibitions.

---

Refuse Permission

Refusing permission means to say that someone is not allowed to do something.

Examples:

• The manager refused permission to use the company vehicle.
• The officer refused permission for the event to take place on the property.

Usage note:
This is a useful descriptive expression, but it is not a single-word synonym for prohibit.

Read More: Synonyms for Shall: 30 Alternatives With Meanings and Examples

---

Not Permit

Not permit means to establish or state that something is not allowed.

Examples:

• The school does not permit students to use phones during exams.
• The building does not permit pets in common areas.

Usage note:
Not permit is often a natural phrase-level equivalent of prohibit, especially in everyday and policy language.

---

Keep From

Keep means to stop someone from doing something or prevent something from happening.

Examples:

• The locked gate kept visitors from entering the restricted area.
• The warning kept us from making the same mistake.

Usage note:
This expression describes prevention rather than a formal prohibition.

---

Prevent Someone From

Prevent someone from means to stop a person from carrying out a particular action.

Examples:

• The barrier prevented children from reaching the machinery.
• Heavy rain prevented the players from continuing the match.

Usage note:
This phrase is grammatically useful when the focus is on stopping a person from doing something. It is not a direct lexical synonym of prohibit.

---

Withhold Permission

Withhold permission means to deliberately refuse to give someone authorization to do something.

Examples:

• The manager withheld permission for employees to access the restricted files.
• The authorities withheld permission for the event to use the public square.

Usage note:
This expression focuses on refusing authorization rather than creating a general prohibition.

---

Make Illegal

Make illegal means to change the legal status of an activity so that the law no longer permits it.

Examples:

• The new law made the sale of the substance illegal.
• The legislation made commercial hunting in the protected zone illegal.

Usage note:
Make illegal is a useful legal expression related to prohibition, but it specifically emphasizes changing something into a legally forbidden activity.

Read More: Synonyms for Error: 30 Words for Mistakes, Faults, and More

---

How to Choose the Right Alternative for Prohibit

Not every alternative to prohibit has exactly the same meaning. Choose the word according to what you want to emphasize.

• Ban = officially say that something is not allowed.
• Forbid = tell someone that they must not do something.
• Disallow = officially refuse to allow something.
• Bar = prevent access, entry, participation, or eligibility.
• Outlaw = make something illegal.
• Proscribe = formally or officially forbid something.
• Interdict = formally prohibit or stop something in specialized contexts.
• Enjoin = legally order someone to do or stop doing something.
• Debar = officially exclude someone from participation or access.
• Restrict = limit something without necessarily banning it.
• Prevent = stop something from happening.
• Limit = keep something within a specified amount or range.
• Restrain = hold back or limit action or behavior.
• Constrain = restrict freedom, choices, or possibilities.
• Preclude = prevent something or make it impossible.
• Curb = reduce or control something undesirable.
• Inhibit = make something less likely or more difficult.
• Block = stop access, movement, or progress.
• Regulate = control something through rules or standards.
• Veto = formally reject a proposal or decision.

Prohibit vs. Ban

Prohibit and ban are often interchangeable when an authority officially says that something is not allowed.

• Prohibit is more formal and common in laws, regulations, and official writing.
• Ban is more common in everyday English and news reporting.

Example:

• The law prohibits smoking inside the building.
• The city banned smoking inside the building.

Both sentences communicate essentially the same prohibition.

Prohibit vs. Forbid

Both words can mean that something must not be done.

• Prohibit often describes formal rules, laws, policies, or regulations.
• Forbid commonly focuses on a person or authority telling someone not to do something.

Example:

• The regulations prohibit the use of unauthorized equipment.
• The doctor forbade him from exercising for several weeks.

Prohibit vs. Restrict

These words are related but are not always interchangeable.

• Prohibit means something is not allowed.
• Restrict means something is limited or controlled.

For example, a library may restrict computer use to one hour per person without prohibiting computer use altogether.

Prohibit vs. Prevent

Prohibit and prevent are closely related but focus on different ideas.

• Prohibit focuses on permission or rules.
• Prevent focuses on stopping an action or event from happening.

Example:

• The policy prohibits visitors from entering after 8 p.m.
• The security guard prevented the visitors from entering.

The first sentence describes a rule; the second describes the result of stopping the action.

Prohibit vs. Regulate

Prohibit means not allowing something, while regulate means controlling it through rules or standards.

For example, a government may regulate the sale of medicine by requiring licenses and safety standards without prohibiting the sale entirely.

---

FAQs About Synonyms for Prohibit

What is the closest synonym for prohibit?

Ban is one of the closest and most common synonyms for prohibit. Forbid and disallow are also strong alternatives.

What is a simple word for prohibit?

The simplest everyday alternative is ban. Depending on the sentence, forbid can also be a natural choice.

Is forbid the same as prohibit?

They are often interchangeable when meaning that something is not allowed. However, forbid commonly focuses on telling someone not to do something, while prohibit is especially common in formal rules and laws.

Is restrict a synonym for prohibit?

Restrict is a close alternative, but it does not always mean a complete ban. A restriction may allow something under specific conditions.

What is the noun form of prohibit?

The main noun form is prohibition, meaning an official rule, law, or action that forbids something.

What is the opposite of prohibit?

Common opposites include allow, permit, authorize, approve, and enable, depending on the context.

What is the formal synonym of prohibit?

Proscribe is a formal synonym, while interdict is a rare formal or legal alternative. Enjoin is used in specific legal contexts.

What is the difference between prohibit and outlaw?

Prohibit broadly means to officially forbid something. Outlaw specifically means to make something illegal under the law.

---

Conclusion

The best alternative to prohibit depends on the exact meaning and context. Ban, forbid, disallow, bar, outlaw, and proscribe are among the strongest alternatives when something is officially not allowed. Interdict, enjoin, and debar are more specialized. Words such as restrict, limit, prevent, restrain, constrain, and preclude express related ideas but should not automatically be treated as exact synonyms. Choosing the right word makes your writing more precise, natural, and effective.