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凹凸不平

Mandarin · pinyin āo tū bù píng

(idiom) uneven (surface); bumpy (road)

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Characters in this entry

凹: āo · concave, hollow, depressed; a pass, valley
凸: tū · protrude, bulge out, convex
不: bù · no, not; un-; negative prefix
平: píng · flat, level, even; peaceful

Written characters and their own readings; the entry’s pronunciation is shown above.

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Mandarin tones

1–1–4–2 · ao1 tu1 bu4 ping2

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Read this spelling in Classical texts

Follow a written form into the eight pinned witnesses: Analects, Mencius, Laozi, Zhuangzi, Xunzi, Han Feizi, Sunzi and the Mao Shijing. A match is a place to investigate; it does not prove that a modern dictionary sense fits the passage.

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Compare dictionary sources Wiktionary · 1 sense · 1 Cantonese reading

Rime Cantonese 粵拼

nap1 dat6 bat1 ping4

Cantonese word readings for 凹凸不平. This lexicon supplies readings, not definitions.

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Wiktionary English definitions · Chinese section

Independent source senses for this spelling, with usage labels retained. Not matched to the pronunciation above.

phrase

(of a surface) uneven; bumpy

Source page · dump 2026-09-02 · Contributors & history

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