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constant

SayKON-stuhnt/ˈkɑnstənt/UK/ˈkɒnstənt/

Noun pluralconstants

9 meanings of constant

Practice

  1. 1
    repeatedadjective
    Happening again and again without stopping for long.

    Like a leaky faucet that keeps dripping and never quite stops.

    The constant noise from traffic kept her awake all night.

    His phone buzzed with constant messages during the meeting.

    Similarcontinuous, persistent, endless, continual, nonstop

    Oppositeintermittent, occasional, sporadic

    Note
  2. 2
    stays the sameadjective
    Staying the same all the time and never changing.

    Like the North Star, always in the same spot in the sky.

    The temperature deep in the cave stays constant all year.

    She kept the car at a constant speed on the highway.

    UsageSay at a constant speed, or that something stays constant.

    Similarsteady, stable, fixed, unchanging, uniform

    Oppositevariable, fluctuating, inconstant, irregular

  3. 3
    fixed numbernouncountable
    In math and science, a number or amount that stays the same and does not change.

    Like a rule that never changes while you play the whole game.

    In this equation, pi is a constant.

    The teacher told us to treat that value as a constant.

    Note
  4. 4
    unchanging thingnouncountable
    Something that does not change while other things around it do.

    Like solid ground that stays still while everything else moves.

    People say that change is the only constant in life.

    Through all the moves, family stayed her one constant.

  5. 5
    faithfuladjective
    Staying loyal and steady in your feelings or actions.

    Like a friend who is always there, no matter what happens.

    He was a constant friend through all her troubles.

    He stayed constant to his old friend through all the hard times.

    UsageSay constant to a friend, or constant in your love.

    Similarfaithful, loyal, steadfast, devoted, true

    Oppositefickle, inconstant, unfaithful, disloyal

    Note

Practice

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Origin

It comes from Latin cōnstāre, meaning "to stand firm," and reached English through Old French.

Checked 7 Nov 2026 · 3 facts