What is another word for "familiar"?

Roget's Thesaurus (1911) lists these synonyms for "familiar": acquaintance, advocate, air, all, ally, alter, ambo, amigo, and, associate, auxiliary, bad, banshee, bedfellow, best, boon, bosom, casual, chamber, childhood, chum, classman, classmate, cloud-compeller, colleague, companion, compatriot, compeer, comrade, confidante, confrere, copartner, countryman, crony, demiurge, deva, divine, dryad, ego, fairy.