Collocations for confident - adj.

appear, be, feel, look, seem, sound
We feel confident that these results are accurate.

become, get, grow
He's becoming more confident as he gets older.
She gradually grew more confident.

remain
make sb
Going to college has made her more confident.

extremely, fairly, very, etc.
highly, remarkably
absolutely, completely, entirely, fully, supremely, totally
overly
He was overly confident, perhaps to the point of arrogance.

increasingly
reasonably
100%, 95%, etc.
I'm 95% confident of success.

quietly, serenely
He came out of the interview feeling quietly confident.
She sauntered onto the set, looking serenely confident.

socially
young people who appear to be socially confident, but inside are a bundle of neuroses

about
We are confident about the future.

in
I'm very confident in our ability to maintain leadership.

of
I'm fully confident of winning the title.

Confident is used with these nouns:
assertion, expectation, manner, mood, prediction, stride