I don't guarantee that it'll work for you. vs I won't guarantee that it'll work for you.

Both phrases are correct, but they convey slightly different levels of certainty. The first phrase 'I don't guarantee that it'll work for you' implies a weaker commitment to the outcome, while the second phrase 'I won't guarantee that it'll work for you' suggests a stronger refusal to provide a guarantee.

Last updated: March 17, 2024 • 1737 views

I don't guarantee that it'll work for you.

This phrase is correct and commonly used in English.

This phrase is used to express a lack of assurance or commitment to the success of something for the other person.

Show examples from the web [+]

Oct 9, 2009 ... It should also go without saying that this is completely unofficial and unsupported, and I don't guarantee that it'll work for you; I can only ...

Alternatives:

I can't guarantee that it'll work for you.
I'm not guaranteeing that it'll work for you.

I won't guarantee that it'll work for you.

This phrase is correct and commonly used in English.

This phrase is used to firmly state a refusal to provide a guarantee for the success of something for the other person.

Show examples from the web [+]

Nov 10, 2012 ... I won't guarantee that it'll work for you, but it does consistently work for me. Here's what happens: At the bottom of the import statements, the ...

Alternatives:

I refuse to guarantee that it'll work for you.
I can't promise that it'll work for you.

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I don't guarantee that it'll work for you. vs I won't guarantee that it'll work for you.