commonly or generally known or seen

a familiar sight.

well-acquainted; thoroughly conversant

to be familiar with a subject.

informal; easygoing; unceremonious; unconstrained

to write in a familiar style.

closely intimate or personal

a familiar friend; to be on familiar terms.

unduly intimate; too personal; taking liberties; presuming

The duchess disliked familiar servants.

domesticated; tame.

of or pertaining to a family or household.

a familiar friend or associate.

Witchcraft and Demonology .

an animal, as a cat, that embodies a supernatural spirit and aids a witch in performing magic.

familiar spirit.

Roman Catholic Church .

an officer of the Inquisition, employed to arrest accused or suspected persons.

a person who belongs to the household of the pope or of a bishop, rendering domestic though not menial service.

adjective

foreign , new , strange , uncommon , undistinguished , unfamiliar , unknown , unremarkable , ignorant , unacquainted , unknowledgeable , aloof , cold , cool , distant , reserved , unapproachable , unfriendly , ceremonious , shy

adjective

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 , 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 * , affable , amicable , buddy-buddy * , chummy * , close , comfortable , confidential , cordial , cozy , dear , easy , forward , free , free-and-easy , fresh , genial , gracious , impudent , intrusive , near , neighborly , nervy , obtrusive , officious , open , palsy , palsy-walsy * , presuming , presumptuous , relaxed , sassy * , smart , snug , sociable , thick , tight , unconstrained , unreserved , wise , regular , widespread , versed , chummy , friendly , assuming , assumptive , audacious , bold , boldfaced , brash , brazen , cheeky , contumelious , impertinent , insolent , malapert , overconfident , pert , pushy , sassy , saucy , acquaintance , bosom , buddy , common , well-known

noun

amigo , brother , chum , confidant , confidante , intimate , mate , pal