凹
concave, hollow, sunken
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
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.