Meaning of “confident” - Learner’s Dictionary

confident

adjective us uk /ˈkɒnfɪdənt/
ABILITY

B1 certain about your ability to do things well:

a confident grin
He feels confident of winning.

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CERTAIN

B2 being certain that something will happen:

[ + (that) ] Doctors are confident that she'll recover.
confidently adverb

(Definition of “confident” from the Cambridge Learner’s Dictionary © Cambridge University Press)