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

透き[geki] gap
透間[sukima] crevice
見え透く[miesuku] to be transparent
見透かす[misukasu] to see through
失透[shittou] devitrification

滲透[shintou] permeation
沁透る[shimitooru] to soak through
透破抜き[suppanuki] exposure
透す[toosu] to stick through
透る[tooru] to go by