Vain
Groundless, Futile
noun, な adjective
くうそ
いい加減 (いいかげん) Irresponsible, Pointless, Unfounded, Careless
無駄 (むだ) Futility, Uselessness, Pointlessness
虚しい (むなしい) Empty, Vacant, Futile, Vain
空疎 (くうそ) Vain, Groundless, Futile
糞 (くそ、kana only、not on WK) Damn, Damn It, Shit, Crap
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