無駄

むだ

futility, uselessness, pointlessness

言うだけ無駄

いうだけむだ

would be a waste of words, would be a waste of breath, there's no point in saying

無駄足

むだあし

visit for no reason, go on fool's errand

無駄花

むだばな

blossom which fails to produce fruit, non-fruit-bearing flower

無駄飯

むだめし

living idly

無駄口

むだぐち

chatter, idle talk

無駄金

むだがね

wasted money

無駄話

むだばなし

gossip, idle talk, chat

無駄骨

むだぼね

useless, waste of time and effort, pointless, vain efforts

無言

むごん

silence

無駄食い

むだぐい

eating between meals, living idly

無駄遣い

むだづかい

wasting... on (e.g. money), squandering, waste, frittering away

無駄吠え

むだぼえ

barking over nothing (of a dog); barking at passers-by or visitors

無駄時間

むだじかん

dead time

無駄死に

むだじに むだしに

dying in vain

無言症

むごんしょう

mutism

無言劇

むごんげき むげんげき

pantomime

無言フォロー

むごんフォロー

following someone (on social media) without writing them a message (to introduce oneself)

無駄骨折り

むだぼねおり むだほねおり

laboring in vain or for no result, labouring in vain