When something is so commonplace you know it well, it's familiar. A familiar song might be one that you hum along to without even thinking about it.

Like family, anything or anyone you're familiar with has been in your life for a while. It can be used in many ways. After six years of Spanish, you'll be familiar with how to conjugate verbs. You and your close friends are on familiar terms. The smell of musty tent fabric is familiar to anyone who grew up going camping a lot, and may bring on a wave of nostalgia.

Definitions of familiar
  1. noun
    a friend who is frequently in the company of another
    synonyms: associate, companion, comrade, fellow
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    date, escort
    a participant in a date
    playfellow, playmate
    a companion at play
    tovarich, tovarisch
    a comrade (especially in Russian communism)
    blind date
    a participant in a blind date (someone you meet for the first time when you have a date with them)
    type of:
    a person you know well and regard with affection and trust
  2. noun
    a person attached to the household of a high official (as a pope or bishop) who renders service in return for support
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    type of:
    retainer, servant
    a person working in the service of another (especially in the household)
  3. noun
    a spirit (usually in animal form) that acts as an assistant to a witch or wizard
    synonyms: familiar spirit
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    type of:
    disembodied spirit, spirit
    any incorporeal supernatural being that can become visible (or audible) to human beings
  4. adjective
    well known or easily recognized
    “a familiar figure”
    familiar songs”
    familiar guests”
    having fair knowledge of
    much trodden and worn smooth or bare
    long-familiar, well-known
    frequently experienced; known closely or intimately
    (used for emphasis) very familiar
    apprehended with certainty
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    not known or well known
    strange, unknown
    not known before
    unacquainted, unacquainted with, unfamiliar with
    having little or no knowledge of
    foreign, strange
    relating to or originating in or characteristic of another place or part of the world
    not known
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  5. adjective
    within normal everyday experience; common and ordinary; not strange
    familiar ordinary objects found in every home”
    “a familiar everyday scene”
    “a familiar excuse”
    “a day like any other filled with familiar duties and experiences”
    common, usual
    commonly encountered
    common or garden
    the usual or familiar type
    commonplace and ordinary
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    strange, unusual
    being definitely out of the ordinary and unexpected; slightly odd or even a bit weird
    antic, fantastic, fantastical, grotesque
    ludicrously odd
    bizarre or fantastic
    curious, funny, odd, peculiar, queer, rum, rummy, singular
    beyond or deviating from the usual or expected
    eerie, eery, spooky
    inspiring a feeling of fear; strange and frightening
    strikingly strange or unusual
    strange and somewhat frightening
    characterized by gloom and mystery and the grotesque
    somewhat strange
    very unusual; different in character or quality from the normal or expected
    strange in an interesting or pleasing way
    very strange or unusual; odd or even incongruous in character or appearance
    strikingly odd or unusual
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  6. adjective
    (usually followed by `with') well informed about or knowing thoroughly
    familiar with the complex machinery”
    “he was familiar with those roads”
    synonyms: conversant
    having much knowledge or education
  7. adjective
    having mutual interests or affections; of established friendship
    “on familiar terms”
    synonyms: intimate
    close in relevance or relationship
Word Family

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