Guarantee vs I made a promise

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

Guarantee

Top 2,000 (common)B2verb

I made a promise

Top 2,000 (common)
 GuaranteeI made a promise
Pronunciation🇬🇧 /["/ˌɡærənˈtiː/","/ˌɡærənˈtiːz/","/ˌɡærənˈtiːd/","/ˌɡærənˈtiːɪŋ/"]/🇺🇸 /["/ˌɡærənˈtiː/","/ˌɡærənˈtiːz/","/ˌɡærənˈtiːd/","/ˌɡærənˈtiːɪŋ/"]/🇬🇧 //aɪ meɪd ə ˈprɒmɪs//🇺🇸 //aɪ meɪd ə ˈprɑːmɪs//
MeaningA promise that something will happen or be done.I said I would do something and I will keep my word.
ExampleI can guarantee that you will enjoy this movie.I made a promise to help her move this weekend.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 2,000 (common)
CEFR levelB2-
Part of speechverb
Collocationsabsolutely, personally, constitutionally, be able to, can, be fully guaranteed, absolutely, almost, practicallymake a promise, keep a promise, break a promise, fulfill a promise, honor a promise
Antonymsdoubt, uncertainty, dispute-
Common mistakesConfused with 'ensure' — 'guarantee' implies a stronger promise., Incorrectly using 'guarantee' without a direct object — always specify what is guaranteed., Mixing up 'guaranteed' as an adjective instead of a past participle.Confused with 'I made a promise to me' instead of 'I made a promise to myself'., Saying 'I make a promise' when referring to a past promise., Omitting 'I' at the beginning of the sentence.
Usage notesUse 'guarantee' when you want to express certainty about an outcome. It's suitable for both written and spoken English, but avoid in casual conversations where simpler words like 'promise' may suffice.Used in both formal and informal contexts. Avoid in casual conversations; prefer more concise phrases.

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Guarantee
I made a promise

Frequently asked questions: Guarantee vs I made a promise

What's the difference between Guarantee and I made a promise?

Guarantee: A promise that something will happen or be done. I made a promise: I said I would do something and I will keep my word.

Can you show an example of each?

Guarantee: I can guarantee that you will enjoy this movie. I made a promise: I made a promise to help her move this weekend.

Can I use Guarantee and I made a promise interchangeably?

Not always. Guarantee and I made a promise 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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