凸 JLPT N1 Kanji 凸 — convex, beetle brow, uneven JLPT N1 5 strokes Secondary (Jōyō) Radical 凵 #2143 most frequent Physical Properties · Shape Size Readings On'yomiトツ Kun'yomiでこ Example words 凸凹でこぼこunevenness; roughness; ruggedness