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

愛敬[aikyou] charm
愛敬のある[aikyounoaru] charming
畏敬[ikei] reverence
恭敬[kyoukei] respect
敬う[uyamau] to show respect

敬愛[keiai] respect and affection
敬意[keii] respect
敬遠[keien] pretending to respect someone while in fact staying distant from him
敬具[keigu] Yours sincerely
敬語[keigo] honorific