A promise is a promise vs Commitment

When to use each in English, with meaning, register, and examples.

A promise is a promise

Common idiom

Commitment

Top 2,000 (common)B2noun
Most common: Commitment
 A promise is a promiseCommitment
Pronunciation🇬🇧 //ə ˈprɒmɪs ɪz ə ˈprɒmɪs//🇺🇸 //ə ˈprɑːmɪs ɪz ə ˈprɑːmɪs//🇬🇧 /["/kəˈmɪtmənt/"]/🇺🇸 /["/kəˈmɪtmənt/"]/
MeaningA promise means you must do what you said.A promise to do something or stay loyal.
ExampleWhen he said he would help me, I knew a promise is a promise.His commitment to the project ensured its success.
RegisterNeutralNeutral
How commonCommon idiomTop 2,000 (common)
CEFR level-B2
Part of speechnoun
Collocationsmake a promise, keep a promise, break a promiseabsolute, complete, full, degree, level, give, make, demonstrate, commitment on, commitment to, a lack of commitment, absolute, complete, full, degree, level, give, make, demonstrate, commitment on, commitment to, a lack of commitment, big, considerable, major, have, take on, fulfil/​fulfill, commitment on, heavy, time, commitment of
Antonyms-disloyalty, indifference
Common mistakesMisinterpreting it as a literal statement about a promise., Using it without context to highlight an agreement.Using 'commitment' without specifying what it's to., Confusing 'commitment' with 'commit' as a verb., 'Commitment' often misused in informal contexts.
Usage notesUsed to emphasize the importance of keeping one's word, often in supportive or serious contexts.Used when discussing promises or obligations in personal or professional contexts. It's generally appropriate in serious discussions and may not fit casual chatting.

See it in real clips

A promise is a promise
Commitment

Frequently asked questions: A promise is a promise vs Commitment

What's the difference between A promise is a promise and Commitment?

A promise is a promise: A promise means you must do what you said. Commitment: A promise to do something or stay loyal.

Which is more common: A promise is a promise and Commitment?

Commitment is the most common in everyday English.

Can you show an example of each?

A promise is a promise: When he said he would help me, I knew a promise is a promise. Commitment: His commitment to the project ensured its success.

Can I use A promise is a promise and Commitment interchangeably?

Not always. A promise is a promise and Commitment are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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