Confident
late 16th century: from French confident(e ), from Italian confidente, from Latin confident- ‘having full trust’, from the verb confidere, from con- (expressing intensive force) + fidere ‘trust’.
wiktionary
From Middle French confident, from Latin confidens(“confident, i.e. self-confident, in good or bad sense, bold, daring, audacious, impudent”), present participle of confidere(“to trust fully, confide”). See confide.
etymonline
confident (adj.)
1570s, "self-reliant, sure of oneself;" c. 1600, "fully assured, having strong belief," from French confident, from Latin confidentem (nominative confidens) "firmly trusting, reliant, self-confident, bold, daring," present participle of confidere "to have full trust or reliance," from assimilated form of com, here perhaps an intensive prefix (see com-), + fidere "to trust" (from PIE root *bheidh- "to trust, confide, persuade"). Related: Confidently.
