Quick answer: Enforce means to make sure that rules or laws are obeyed: The police enforce the speed limit. Impose means to force something — a rule, a tax, or a burden — onto others, often against their will: The government imposed a new tax. When in doubt: ENFORCE = make an existing rule obeyed; IMPOSE = put a new burden or rule on someone. For a fuller definition, see the Cambridge Dictionary entry for ‘enforce’.
Comparison Table
| Word | Part of Speech | Meaning | Example |
|---|---|---|---|
| enforce | verb | to make sure a rule, law, or standard is obeyed | Staff must enforce the dress code. |
| impose | verb | to force a rule, tax, or burden onto someone, usually against their wishes | They imposed strict conditions on the loan. |
Using Enforce
Enforce assumes a rule already exists and focuses on making people obey it. The subject is usually an authority — police, governments, courts, managers, or systems — that ensures compliance. You enforce laws, rules, regulations, contracts, and standards.
The new law will be difficult to enforce.
Referees enforce the rules of the game.
The company strictly enforces its safety policy.
Courts can enforce the terms of a contract.
Notice that what is enforced already exists. You cannot enforce something that has not yet been created — you first impose or introduce it, then enforce it.
Enforce Focuses on Compliance
The key idea in enforce is obedience. It often pairs with adverbs like strictly, rigorously, or fully: strictly enforce, rigorously enforce. The noun is enforcement (as in law enforcement).
Using Impose
Impose is about introducing something and forcing it on people who may not want it. It often carries a negative or unwelcome feeling. You impose taxes, fines, sanctions, restrictions, conditions, deadlines, and even your opinions or your presence on others.
The court imposed a heavy fine.
Sanctions were imposed on the country.
Please don’t impose your views on everyone else.
I don’t want to impose on you — I can find a hotel.
Impose On Someone
A useful idiom is to impose on someone, meaning to take unfair advantage of their kindness or to be a burden: I hope I’m not imposing. This polite, social use has no equivalent with enforce. The noun form is imposition.
Key Differences at a Glance
- Existence: Enforce acts on a rule that already exists; impose introduces something new.
- Focus: Enforce focuses on obedience; impose focuses on forcing something onto others.
- Tone: Enforce is neutral; impose often feels unwelcome or unfair.
- Objects: Enforce laws, rules, contracts; impose taxes, fines, sanctions, conditions, opinions.
Side-by-Side Examples
The government imposed a curfew. (introduced it)
The army was sent to enforce the curfew. (make people obey it)
The council imposed a parking ban.
Wardens enforce the parking ban every day.
Common Mistakes
✗ The government enforced a new tax last year.
✓ The government imposed a new tax last year. (then it can enforce it)
✗ Police impose the speed limit on this road.
✓ Police enforce the speed limit on this road.
✗ They imposed new rules to the staff.
✓ They imposed new rules on the staff.
Memory Tip
Think of ENFORCE as adding FORCE to a rule that is already there — pushing people to obey it. Think of IMPOSE as POSitioning a new burden on top of someone — you place it on them whether they like it or not.
Enforce or Impose?
Three questions — choose the correct word for each sentence.
1. “The police ___ the speed limit.” (make sure a rule is obeyed)
2. “The government ___d a new tax.” (put a new burden on people)
3. “Staff must ___ the dress code.”
Frequently Asked Questions
What is the main difference between enforce and impose?
Enforce means to make sure that an existing rule or law is obeyed, focusing on compliance. Impose means to force something new — a rule, tax, or burden — onto others, often against their will. You impose a rule first, then enforce it afterwards.
Can enforce and impose be used interchangeably?
No. They describe different stages. Impose creates or introduces a rule, tax, or restriction. Enforce ensures people obey what already exists. Saying “the police impose the speed limit” is wrong; they enforce it. The government, however, imposed it.
Which word sounds more negative — enforce or impose?
Impose usually sounds more negative because it suggests forcing something unwelcome onto people: imposing taxes, sanctions, or your opinions. Enforce is more neutral — it can describe fair and necessary action, such as enforcing safety rules.
What preposition follows impose?
Impose is usually followed by “on” (or sometimes “upon”): impose a tax on imports, impose conditions on the deal, impose your views on others. Avoid “impose to.” You can also use impose alone: “new rules were imposed.”
What does “impose on someone” mean socially?
In a social sense, “to impose on someone” means to take unfair advantage of their kindness or to be a burden. “I don’t want to impose” is a polite way of saying you don’t want to cause inconvenience. Enforce has no such social use.
What are common collocations with enforce?
Common collocations: enforce a law, enforce the rules, enforce a contract, enforce a policy, enforce standards, strictly enforce, rigorously enforce, difficult to enforce, law enforcement.
What are common collocations with impose?
Common collocations: impose a tax, impose a fine, impose sanctions, impose restrictions, impose conditions, impose a deadline, impose a ban, impose a curfew, impose your views, impose on someone.
What are the noun forms of enforce and impose?
The noun for enforce is enforcement (as in “law enforcement”). The noun for impose is imposition, which can mean both the act of imposing and an unwelcome burden: “the imposition of new taxes” or “sorry to be such an imposition.”
Can a person impose something on themselves?
Yes. You can impose limits or discipline on yourself: “She imposed a strict routine on herself.” This is common in self-discipline contexts. Enforce, by contrast, almost always involves making others obey rather than oneself.
How do enforce and impose appear in academic writing?
Both are useful in essays about law, politics, and economics. Use impose for introducing policies: “Governments imposed lockdowns to slow the spread.” Use enforce for ensuring compliance: “Without resources, such regulations are hard to enforce.”