- familiar [adj1] common, well-known accustomed, commonplace, conventional, customary, domestic, everyday, frequent, garden variety*, habitual, homespun, household, humble, informal, intimate, known, matter-of-fact, mundane, native, natural, old hat*, ordinary, plain, prosaic, proverbial, recognizable, repeated, routine, simple, stock, unceremonious, unsophisticated, usual, wonted, workaday; concepts 530,547 —Ant. foreign, new, strange, uncommon, undistinguished, unfamiliar, unknown, unremarkable familiar [adj2] knowledgeable abreast, acquainted, apprised, at home with*, au courant, au fait, aware, cognizant, conscious, conversant, grounded*, informed, in on*, in the know*, introduced, kept posted*, mindful, no stranger to*, plugged in*, savvy, tuned in*, up*, up on*, versant, versed in, well up in*, with it*; concept 402 —Ant. ignorant, unacquainted, unknowledgeable familiar [adj3] friendly, bold affable, amicable, buddy-buddy*, chummy*, close, comfortable, confidential, cordial, cozy, dear, easy, forward, free, free-and-easy*, fresh, genial, gracious, impudent, informal, intimate, intrusive, near, neighborly, nervy, obtrusive, officious, open, palsy, palsy-walsy*, presuming, presumptuous, relaxed, sassy*, smart, snug, sociable, thick, tight, unceremonious, unconstrained, unreserved, wise; concept 555 —Ant. aloof, cold, cool, distant, reserved, unapproachable, unfamiliar, unfriendly
New thesaurus. 2014.