ヘイ, ヘツ, フツ, おお.う, おお.い

cover, shade, mantle, capsize, be ruined

JLPT0 G7 S15 F5000

As per # (split) + 艸 grass/plant → split vegetation (compare 茇) in which prey is covered/hidden (to reveal it) → *cover*; *hide*.

[Full Kanji Etymology List]