Confide

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late Middle English (in the sense ‘place trust (in’)): from Latin confidere ‘have full trust’. The sense ‘impart as a secret’ dates from the mid 18th century.

wiktionary

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From Latin confīdō(“I trust fully, I am assured, confide, rely”), from con-(“together”) + fīdō(“I trust”); see faith, fidelity.

etymonline

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confide (v.)

mid-15c., "to place trust or have faith," from Latin confidere "to trust in, rely firmly upon, believe," from assimilated form of com, here perhaps an intensive prefix (see com-), + fidere "to trust" (from PIE root *bheidh- "to trust, confide, persuade"). Meaning "to share a secret with, take into one's confidence" is from 1735; phrase confide in (someone) is from 1888. Related: Confided; confiding.