adjective

uncertain

uncertain, unsure

The future is always uncertain.

The future is always uncertain.

I'm uncertain about what to do next.

I'm uncertain about what to do next.

((to be)) uncertain about ((sth.)) to not be sure about (sth.) I am uncertain about the date.

It is uncertain ((clause)) it is not known for sure (if/what/etc.) It is uncertain whether he will come.

Synonyms: unsure, doubtful, indefinite; Antonyms: certain, sure, definite

From the prefix 'un-' (not) and 'certain' (known for sure; established beyond doubt).

If you are 'UN-CERTAIN', you are 'NOT CERTAIN'. You feel unsure or don't know what will happen.

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