Synonyms of confidant in English:

confidant

(also confidante)

See definition of confidant

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