A promise is a promise vs Pledge

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

A promise is a promise

Common idiom

Pledge

FormalTop 2,000 (common)C1verb
Most formal: PledgeMost common: Pledge
 A promise is a promisePledge
Pronunciation🇬🇧 //ə ˈprɒmɪs ɪz ə ˈprɒmɪs//🇺🇸 //ə ˈprɑːmɪs ɪz ə ˈprɑːmɪs//🇬🇧 //plɛdʒ//🇺🇸 //plɛdʒ//
MeaningA promise means you must do what you said.To make a serious promise or commitment.
ExampleWhen he said he would help me, I knew a promise is a promise.She decided to pledge her support to the charity event.
RegisterNeutralFormal
How commonCommon idiomTop 2,000 (common)
CEFR level-C1
Part of speechverb
Collocationsmake a promise, keep a promise, break a promisepledge allegiance, pledge support, pledge a donation
Antonyms-renounce, disavow, withdraw
Common mistakesMisinterpreting it as a literal statement about a promise., Using it without context to highlight an agreement.Confused with 'pledged' vs 'pledge' as different tenses., Omitting the object after the verb., Using 'pledge' when referring to a general promise instead of a formal commitment.
Usage notesUsed to emphasize the importance of keeping one's word, often in supportive or serious contexts.Typically used in formal contexts, such as during ceremonies or official statements. Avoid in casual conversations.

See it in real clips

A promise is a promise
Pledge

Frequently asked questions: A promise is a promise vs Pledge

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

A promise is a promise: A promise means you must do what you said. Pledge: To make a serious promise or commitment.

Which is more formal: A promise is a promise and Pledge?

Pledge is the most formal of these.

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

Pledge 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. Pledge: She decided to pledge her support to the charity event.

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

Not always. A promise is a promise and Pledge 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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