疲
ヒ, つか.れる, づか.れ, つか.らす
exhausted, tire, weary
JLPT3 G7 S10 F1263
As per
皮
# (align) +
疒
illness → align the legs and *bend* over on account of *fatigue* (compare
留
) → *get/be tired*.
[Full Kanji Etymology List]