needn't
Lack of obligation
Needn't is a contraction of "need not," used to indicate that something is unnecessary or not required.
It functions as a modal verb, typically followed by the base form of another verb: You needn't worry about the details.
While common in British English, needn't is relatively rare in American English, where speakers prefer "don't need to" or "don't have to." It often appears in polite suggestions that something can be skipped or avoided: You needn't bother bringing anything.
Contraction forbidding action
- won'tContraction showing refusal
- can'tLacking the ability
- shouldn'tAdvised against doing
- couldn'tPast inability marker
wouldn't · mustn't · shan't · isn't · aren't · haven't · hasn't · hadn't
Not mandatory
- dispensableAble to be sacrificed
- unessentialNot strictly needed
- unrequiredNot needed or demanded
- nonobligatoryNot compulsory or mandated
discretionary · elective · voluntary · waivable · excused · spared · exempt · relieved
Reassurance against anxiety
- relaxBecome less tense
- rest assuredFeel certain, stop worrying
- not requiredNot mandatory
- no obligationNo requirement to act
feel free · take it easy · no pressure · all good · no rush
don't
Contraction forbidding action
couldn't · wouldn't · mustn't · shan't · isn't · aren't · haven't · hasn't · hadn't · didn't
optional
Not mandatory
- dispensableAble to be sacrificed
- unessentialNot strictly needed
- unrequiredNot needed or demanded
nonobligatory · discretionary · elective · voluntary · waivable · excused · spared · exempt · relieved · absolved
don't worry
Reassurance against anxiety
- relaxBecome less tense
- rest assuredFeel certain, stop worrying
- not requiredNot mandatory
no obligation · feel free · take it easy · no pressure · all good · no rush