Synonyms of confidant in English:

confidant

(also confidante)

See US English definition of confidant

See UK English definition of confidant

See Spanish definition of confidente

noun

1‘he was her confidant and business adviser’

SYNONYMS
close friend, bosom friend, best friend, close associate, companion, crony, intimate, familiar, second self
mentor, adviser, counsellor
alter ego
consigliere
informal chum, pal, buddy, main man
British informal mate, oppo, mucker, bezzie
rare fidus Achates