Definition of familiar :
1. A confidential officer employed in the service of the tribunal, especially in apprehending and imprisoning the accused.
2. An attendant demon or evil spirit.
3. An intimate; a companion.
4. Characterized by, or exhibiting, the manner of an intimate friend; not formal; unconstrained; easy; accessible.
5. Closely acquainted or intimate, as a friend or companion; well versed in, as any subject of study; as, familiar with the Scriptures.
6. Improperly acquainted; wrongly intimate.
7. Of or pertaining to a family; domestic.
8. Well known; well understood; common; frequent; as, a familiar illustration.
young man, dude, public, native, internal, fella, well-known, unvarnished, gent, popular, near, blighter, love, overconfident, homespun, beau, cozy, brazen, workaday, plain, versed, lad, associate degree, knowledge, knowledgeable, courtesy, smart-alecky, sassy, brash, pushy, thick, familiar spirit, informal, associate, versant, insolent, swain, natural, homely, fresh, pert, conversant, confrere, prosaic, matter-of-fact, bloke, attitude, sidekick, cuss, confidante, chap, humble, contumelious, uppish, bud, snippety, impudent, unsophisticated, uppity, sexual, prevalent, acquainted, nervy, boldfaced, wise, simple, cheeky, buster, assumptive, strange, friendly, fellow traveller, assuming, audacious, feller, malapert, snippy, inner, smart, exotic, saucy, unusual, fellow traveler, flip, tight, widespread, impertinent, boyfriend, brassy
friendly (part of speech: adjective)
friend (part of speech: noun)
chum, teammate, acquaintance, brother, roommate, comrade, crony, co-worker, pal, companion, partner, buddy, confidant, classmate, ally, fellow, cousin, intimate, mate, playmate, friend, colleague, schoolmate, amigo, company, sister
habitual (part of speech: adjective)
kindred (part of speech: adjective)
regular (part of speech: adjective)
constant, monotonous, metronomic, normal, frequent, rhythmic, epochal, ordinary, mundane, predominating, steady, cyclical, universal, recurrent, average, periodic, continual, usual, prevailing, customary, commonplace, canonical, standard, stock, orthodox, traditional, everyday, chronic, general