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kid

KID/kɪd/

Pluralkids

Verbkids, kidding, kidded

14 meanings of kid

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  1. 1
    childnouncolloquialcountable or uncountable
    A child or young person, including one who grew up in a particular time or place.

    Every kid in the neighborhood showed up for the birthday party.

    The college freshmen still act like kids when they get together.

    UsageIn formal writing, child and children are the usual words.

    Similarchild, youngster

    Oppositeadult, grown-up

    Note

    A farmyard word turned onto people. Dickens already uses it for a boy in 1838. C. S. Lewis's The Magician's Nephew (1955) shows how it can talk down to someone: "a kid like you" places the listener firmly below adult standing.

    Checked 2 Nov 2026 · 3 facts

    • Dickens used kid for a boy by 1838, in Oliver Twist. en.wiktionary.org
    • C. S. Lewis wrote The Magician's Nephew, first published in 1955. en.wikipedia.org
    • The quotation occurs in the novel; Digory addresses Polly, belittling her as a child. fadedpage.com
  2. 2
    own childnouncolloquialcountable or uncountable
    One's son or daughter, no matter how old they are.

    His kid is a grown man with children of his own.

    She still worries about her kids even though they're middle-aged.

    UsageOften with a possessive, even for grown children: my kids, her kid.

    Similarchild

  3. 3
    jokeverbcolloquialintransitive
    To say something as a joke, or to tease, fool, or deceive someone, usually playfully.

    He likes to kid around with his coworkers during breaks.

    They were only kidding about moving to Alaska next year.

    UsageMost often in the -ing form: just kidding, You're kidding!, No kidding!

    Similarjoke, tease, fool, josh

    Note

    It lives almost entirely in the -ing form and in short fixed exclamations: You're kidding!, You must be kidding!, I'm only kidding!, No kidding! The first two express astonishment, and the third takes back a remark. No kidding can confirm that something is true or, in a dry tone, point out that it was obvious all along.

  4. 4
    adjective
    Describing a brother or sister who is the younger one in the family relationship being mentioned.

    I spent the whole summer babysitting my kid sister while our parents worked.

    His kid brother followed him onto the varsity team two years later.

    Similarlittle, younger, baby

    Oppositebig, older

    Note

    It works only in front of the two sibling words, kid sister and kid brother, and never after a verb: nobody says my sister is kid. The sibling need not be a child, because the word marks only who is younger, so adults use it of grown brothers and sisters too. In careful writing, younger sister or younger brother is the neutral choice.

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Origin

Old Norse kið ("young goat") passed into Middle English as kide. The Norse word goes back to Proto-Germanic *kidją and perhaps, further back, to a Proto-Indo-European root for "goat". Swedish and Danish kid and German Kitz are related. People have used it to mean "child" as slang since at least the 1600s and in informal speech since the 1840s.

Checked 1 Nov 2026 · 6 facts

  • Middle English kide was borrowed from Old Norse kið, meaning ‘young goat’. en.wiktionary.org
  • Old Norse kið derives from reconstructed Proto-Germanic *kidją. en.wiktionary.org
  • A Proto-Indo-European root meaning ‘goat’ is a proposed further origin. en.wiktionary.org
  • Swedish kid, Danish kid and German Kitz are related to English kid. en.wiktionary.org
  • The slang meaning ‘child’ existed by the 1600s. en.wiktionary.org
  • The meaning ‘child’ has been in informal use since the 1840s. en.wiktionary.org