chum

noun

A close friend.

verb

Form a friendship with someone.

SYNONYMS

alter egoamigobosom palbrobuddybuttychinaclassmatecompadrecompanioncompeerconfidantcronycullyfamiliarfidus Achatesfriendgabbahomeboyintimatemain manmarramarrermarrowmatemuckeroppopaisanpalplaymateschoolmatesecond selfsidekicksparworkmate