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

一寸逃れ[issunnogare] quibbling
飲逃げ[nominige] leaving drinks unpaid for
借り逃げ[karinige] running away from a debt
食い逃げ[kuinige] running away without paying for food
敵前逃亡[tekizentoubou] deserting under enemy fire

当て逃げ[atenige] hit-and-run accident causing property damage
逃がす[nigasu] to let loose
逃げる[nigeru] to escape
逃延びる[nigenobiru] to make good one's escape
逃げおおせる[nigeooseru] to escape