pal informal
noun
friend, companion, comrade, intimate, familiar, confidant, alter ego, second self;
playmate, classmate, schoolmate, workmate;
informal chum, buddy, bosom pal, sidekick, cully, spar, crony, mucker, butty, main man;
British, informal mate, oppo, china;
Northern English, informal marrow, marrer, marra;
North American, informal amigo, compadre, paisan, bro;
North American, & South African, informal homeboy, homegirl;
South African, informal gabba;
archaic compeer;
rare fidus Achates.
pal Oxford Dictionary of English