遺失[ishitsu] loss
遺失物[ishitsubutsu] lost article
一失[isshitsu] disadvantage (defect, error)
一得一失[ittokuisshitsu] gaining some and losing some
栄養失調[eiyoushicchou] malnutrition

過失[kashitsu] error
見失う[miushinau] to lose sight of
失う[ushinau] to lose
失する[shissuru] to lose
失せる[useru] to disappear

逸る[haguru] to stray from
逸散に[issanni] at top speed
逸らす[sorasu] to turn away
逸れ矢[soreya] stray arrow
逸機[ikki] missing a chance

逸球[ikkyuu] muffed ball
逸材[itsuzai] outstanding talent
逸事[itsuji] anecdote
逸出[isshutsu] escape
逸速く[ichihayaku] promptly