familiar

Synonyms: 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

Antonyms: foreign new strange uncommon undistinguished unfamiliar unknown unremarkable

Synonyms: 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

Antonyms: ignorant unacquainted unknowledgeable

Synonyms: 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

Antonyms: aloof cold cool distant reserved unapproachable unfamiliar unfriendly