狂
キョウ, くる.う, くる.おしい, くるお.しい
lunatic, insane, crazy, confuse
JLPT1 G7 S7 F1425
As per 王# (extend) + 犬 dog/beast → dog that runs *wild* and extensively (compare 戻 and 猛) → *mad*; *crazy* → *manic*; *enthusiastic*. Also, *function improperly* (← fail to act normally).
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