夸
コ, カ, ほご.る

boast

JLPT0 G13 S0 F5000

Variant# of 于 (U-shape) + 大 stand outstretched → stride/stretch over an object, the crotch forming a U-shape (compare 奎) → *extravagant* (← exaggerated pose). *Boast* is a borrowed meaning via 誇.

[Full Kanji Etymology List]