忙
ボウ, モウ, いそが.しい, せわ.しい, おそ.れる, うれえるさま
busy, occupied, restless
JLPT3 G7 S6 F1475
As per
亡
# (obscure) +
心
heart/emotions → obscure state of mind, on account of busyness or being pressed/hurried → *busy*.
[Full Kanji Etymology List]