無為 is read as むい (mui) and means idleness.
むい
mui
むさくい
random
むさくむい
do-nothingism
むしょうこうい
gratuitous act
むいしぜん
abandoning artifice and just being oneself
むいむさく
do-nothing, plan-nothing (government, etc.)
むさくいかひかくしけん
randomized controlled trial
むいむのう
idle and incompetent
むさくいちゅうしゅつ
random sampling
むいとしょく
idling one's time away
むいぶりょう
boredom
むじょうけん
unconditional
むし
disregarding