Kanji Kaisen

漢字Kanji · in Structures & Home

凹: concave, hollow

Also: sunken

JLPT N15 strokesSecondary schoolYour ink: 白 Not met
5 strokes

Four readings, and the words that use each

オウou · on'yomi · in compounds

  • 凹凸おうとつunevenness; bumpiness; roughness

くぼむkubomu · kun'yomi · on its own

  • 凹みくぼみhollow; cavity; dent

へこむhekomu · kun'yomi

  • 凹むへこむto be dented; to be indented; to yield

ぼこboko · kun'yomi

  • 凸凹でこぼこunevenness; roughness; ruggedness

Words: JMdict, EDRDG, CC BY-SA 4.0.

Learn it 4 steps
Print sheet Present
成り立ち

Where it comes from

Origin · sourced

Pictogram (象形)

Source: Wiktionary, 凹 (rev. 92198658), CC BY-SA 4.0

Memory story · made up to help you remember

“A direct, symmetrical pictograph of a "container" or a depressed shape—representing the pure concept of being "sunken" or concave.”
From the 凵 container story
繋がり
Ink shades, lightest to darkest: 白 Not met, 淡 Met, 中 Learning, 濃 Familiar, 印 Mastered
凵

Also built on container (凵)

All 5

Also read オウ

18 kanji share this on'yomiAll 18
In ChineseSame character in simplified and traditional · āo

Same form: 凹 is written the same way in mainland China (simplified) and in Taiwan and Hong Kong (traditional).

Simplified
凹 mainland China, Singapore
Traditional
凹 Taiwan, Hong Kong

Pinyin āo most common reading

Forms and pinyin: Unicode Unihan database (Unicode License v3). Pinyin lists the most common reading, not every reading.

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