對
タイ, ツイ, あいて, こた.える, そろ.い, つれあ.い, なら.ぶ, むか.う, つし

correct, right, facing, opposed

JLPT0 G13 S0 F5000

丵 is a depiction of a thick clump of tall grass. 對 is a variant of 丵 + 寸 hand/action indicator → lay clumps of grass out to dry, facing each other → *confront*; *face* → *opposite*; *a pair of*.

[Full Kanji Etymology List]