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Kotomora

凹

concave, hollow, sunken

JLPTN1StatusJōyō · secondary schoolFrequencyTop 5,000Strokes5

Readings

On'yomi

  • オウ

Kun'yomi

  • くぼ.む
  • へこ.む
  • ぼこ

Meaning

凹 centers on a shape that curves inward: something concave, hollow, or sunken. The idea applies to physical depressions and to things that are dented or caved in.

Most common words using 凹

20 of 32
  • 凹むへこむ
    N2

    to be dented; to be indented; to yield; to give; to sink; to collapse; to cave in

  • 凸凹でこぼこ
    N2

    unevenness; roughness; ruggedness; bumpiness

  • 凹凸おうとつ

    unevenness; bumpiness; roughness; ruggedness

  • 凹みくぼみ
    N1

    hollow; cavity; dent; depression

  • 凹おう

    concave; hollow; sunken

  • 凹面おうめん

    concavity

  • 凸凹コンビでこぼこコンビ

    odd couple; incongruous couple

  • 凸凹猛獣狩でこぼこもうじゅうがり

    Africa Scream (film)

  • 凸凹紙とつおうし

    embossed paper

  • 凹き所に水溜まるくぼきところにみずたまる

    when the right conditions are fulfilled, things will turn out well on their own; a sunken place will collect water

  • 凹たれるへこたれる

    to lose heart; to be discouraged; to be dejected; to be exhausted; to be tired out

  • 凹ますへこます

    to dent; to indent; to depress; to humiliate

  • 凹ませるへこませる

    to dent; to indent; to depress; to humiliate

  • 凹めるくぼめる

    to hollow out

  • 凹レンズおうレンズ

    concave lens

  • 凹多角形おうたかくけい

    concave polygon; non-convex polygon

  • 凹形おうけい

    concavity

  • 凹所おうしょ

    concavity; hollow; depression

  • 凹版おうはん

    intaglio plate

  • 凹版印刷おうはんいんさつ

    intaglio printing

Explore all words using 凹 →

Study

Etymology

凹 is a pictograph of a concave depression, with the modern form preserving a hollowed-out shape.

Meaning mnemonic

The shape of 凹 looks like a container with a sunken middle. Picture pressing your thumb into soft clay and leaving a hollow dent: that is concave.

Reading mnemonic

For オウ, imagine a hollow bowl that makes a deep 'oh' sound when you tap it: 'oh' -> オウ, and the bowl is concave.