concave
convex
Come learn 3000+ Chinese characters with HanziHero!
→ao1tu2 • āotú
bumpy
uneven
這 條 路面 很 凹凸。
This road surface is very bumpy.
凹凸 的 地板 很 難 走。
The bumpy floor is hard to walk on.
桌子 的 表面 凹凸 不平。
The surface of the table is uneven and bumpy.