attractive, bewitching, calamity
妖 centers on a dangerous, supernatural allure: something bewitchingly attractive that can also bring calamity or misfortune.
妖 combines 女 (woman) with 夭, which likely contributes both sound and the idea of something delicate, young, or prematurely cut off, together suggesting a bewitching, calamitous feminine force.
A woman 女 beside 夭, which looks like a twisted, delicate sprout: imagine a dangerously attractive enchantress whose beauty brings disaster.
For ヨウ, picture a bewitching yōkai (妖怪) spirit: yō -> ヨウ, and the woman-like spirit lures you into calamity.
ghost; apparition; phantom; spectre; specter; demon; monster; goblin; yōkai
fairy; sprite; elf
fascinating; voluptuous; bewitching; captivating
mysterious; bewitching; alluring; enticing; enchanting
ghost; monster; demon; phantom; apparition
fox with supernatural powers; fox spirit
bewitched sword; magical sword; demon sword
(black) magic; witchcraft; sorcery
ominous atmosphere; ghostly air; weird air; unearthly atmosphere
enchantress; vamp
great demon; ghostly giant
spirit power; magical power
ghostly, beautiful woman
hag; old witch
enchantress; seductress; vamp; siren
monstrous apparition; terrifying creature; incomprehensible horror
Yokai Dochuki (video game)
ominous air; weird air; menacing atmosphere
ghost; apparition
monster; demon; magical beast