best friend Synonyms

bosom friend bestie very close friend BFF boon companion bro first mate soul mate cobber sidekick buddy jong amigo bosom buddy compadre main man number one buddy very good friend friend for life closest friend best bud good friend best mate best buddy close friend bosom pal soul sister soulmate alter ego old boy crony confidante confidant comrade compeer companion chum china chica bruh brother associate cully familiar fellow homeboy partner in crime sounding-board sister schoolmate