無駄

むだ

futility, uselessness, pointlessness

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

無駄言

むだごと

chatter, idle talk

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

無駄な医療

むだないりょう

medical futility

無駄を省く

むだをはぶく

to eliminate waste

無駄にする

むだにする

to render futile, to bring to naught, to waste, to not make good use of

時間の無駄

じかんのむだ じかんのムダ

waste of time

無駄になる

むだになる

to come to nothing, to be in vain, to lead nowhere