Radical 讠
9 strokes
誤
words 讠 (67c) + shout out 吴 (731a) = mistake 误
This also means “to miss” (e.g. a train, by arriving too late).
[误会 (59) wùhuì misunderstand]
[误点 (185) wùdiǎn late, overdue, behind schedule]

(Monks are poring over a piece of calligraphy) Looking over the beautiful words, they shout out whenever they spot a mistake. / The dwarf, who wrote it, is wounded by their criticism (and goes off in a huff).