棄却[kikyaku] rejection
棄権[kiken] abstaining from voting
棄権者[kikensha] non-voter
棄言葉[sutekotoba] sharp parting remark
棄死[kishi] execution by decapitation, followed by public display of the body (form of punishment in ancient China)

棄世[kisei] death
棄背[kihai] giving up and turning back
棄約[kiyaku] breaking a promise
棄老[kirou] old person thrown away in the mountains
棄捐[kien] donation

鬼利死丹[kirishitan] early Japanese Christianity (from the later Muromachi period)
あっ死[asshi] crushing to death
安楽死[anrakushi] euthanasia
一死[isshi] dying
一死後[isshigo] after one out (in Baseball)

一死報国[isshihoukoku] dying for one's country
煙死[enshi] death by smoke suffocation
横死[oushi] violent (tragic or accidental) death
仮死[kashi] asphyxiation
過労死[karoushi] death from overwork and mental stress