See buddy in Webster's New World Roget's A-Z Thesaurus II
A person whom one knows well, likes, and trusts:
amigo, brother, chum, confidant, confidante, familiar, friend, intimate1, mate, pal. (Informal) bud2. (Slang) sidekick. See loveOne who shares interests or activities with another:
associate, chum, companion, comrade, crony, fellow, mate. (Informal) pal. See nearLearn more about buddy