曷 — how （字素部件）

Sun (日) over a person bending forward (匃) — classical interrogative meaning 'how/why'. Phonetic component carrying KATSU/KETSU readings. Phonetic component of 掲 (hoist), 葛 (kudzu), 喝 (scold), 渇 (thirst), 褐 (brown), 謁 (audience).