曷
カツ, なんぞ, いつ, いずくんぞ, なに
why, how, when
JLPT0 G13 S0 F5000
As per 匃# (cut off) + 曰 say/speech indicator → cut off another person's speech. Compare 害. *Who*, *what*, *when*, *why* and *how* are borrowed meanings. The derivative characters 褐 and 謁 employ a variant form of 曷.
[Full Kanji Etymology List]