What is another word for idk?

Explore the synonym list above for alternatives to idk.

What is the opposite of idk?

Antonyms of idk include certain, sure, confident, decided, resolved.

Synonyms for

Another word for idk — explore alternatives below. For syllable breakdowns and pronunciation, see this word on Syllablesworld.

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Formal

uncertain unsure undecided dubious

Informal

dunno not sure no idea beats me

certain sure confident decided resolved knowing

Usage note

idk is an initialism for 'I don't know' and is exclusively used in informal digital communication. It should not be used in formal writing or speech.

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