DictionaryAI

familiar

fuh-MIL-yur/fəˈmɪl.jɚ/UKfuh-MIL-ee-uh/fəˈmɪl.i.ə/

9 meanings of familiar

Practice

  1. 1
    well knownadjective
    Known to a person, or widely recognized; commonplace.

    The streets near her childhood home were still familiar after twenty years.

    Email scams often use familiar logos to seem trustworthy.

    UsageSomething is familiar to you; you are familiar with it. Sounds familiar or looks familiar for something half-recognized.

    Similarrecognizable, known, well-known, common, everyday

    Oppositeunfamiliar, unknown, strange, unrecognizable

    Note

    It pairs readily with adverbs of weary recognition, as in the "depressingly familiar note" of Margery Allingham's The China Governess, and sounds familiar is the stock phrase for something half-recognized.

  2. 2
    knowing aboutadjective
    Having knowledge of something through study or experience; acquainted with it.

    The lawyer was familiar with every clause in the contract.

    Most students are familiar with basic algebra by tenth grade.

    UsageA person is familiar with something; a thing is familiar to a person: familiar with algebra.

    Similaracquainted, conversant, versed, knowledgeable

    Oppositeunfamiliar, unacquainted, ignorant

  3. 3
    adjective
    Marked by closeness or friendliness; intimate in manner.

    Her familiar tone with the manager surprised the new hires.

    She was a little too familiar with the new manager, calling him by a nickname on her first day.

    UsageOn familiar terms is warm; being too familiar with someone usually means taking liberties.

    Similarintimate, friendly, informal, casual, relaxed

    Oppositeformal, distant, reserved, aloof

    Note

    Friendliness can tip into presumption here. Shakespeare's Hamlet holds both edges in "Be thou familiar; but by no means vulgar." To be on familiar terms is warm, while being too familiar with someone means taking liberties, as in the rebuke don't be familiar with me, boy! The word goes back to Latin familiāris, belonging to the household.

Practice

Can you tell the meanings of familiar apart? Answer 3 quick questions from this page, or write your own sentence and AI will check it.

Origin

This word came through Middle English "familiar" from Latin "familiāris," meaning pertaining to servants or the household. It can be seen as "family" plus "-ar," and it replaced the native Old English word "hīwcūþ."

Checked 6 Nov 2026 · 4 facts