無駄

むだ

futility, uselessness, pointlessness

無駄口をたたく

むだぐちをたたく

to chatter pointlessly, to waste one's breath

無駄足

むだあし

visit for no reason, go on fool's errand

無駄飯

むだめし

living idly

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

無駄口

むだぐち

chatter, idle talk

無駄言

むだごと

chatter, idle talk

無駄金

むだがね

wasted money

無駄花

むだばな

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

無駄骨を折る

むだぼねをおる

to waste one's efforts, to work to no (useful) effect

無駄足を踏む

むだあしをふむ

to go on a fool's errand, to go in vain

無反省

むはんせい

lack of reflection (on one's conduct, failures, etc.); lack of self-examination; lack of introspection

無駄遣い

むだづかい

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

無駄食い

むだぐい

eating between meals, living idly

無駄死に

むだじに むだしに

dying in vain

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

駄駄を捏ねる

だだをこねる

to be unreasonable, to whine, to throw a tantrum