どら息子[doramusuko] lazy son
愛息[aisoku] (your) beloved son
安息[ansoku] rest
一人息子[hitorimusuko] an only son
一息[hitoiki] one breath

因循姑息[injunkosoku] dilly-dallying and temporizing (temporising)
気息[kisoku] breathing
気息奄奄[kisokuenen] gasping for breath
休息[kyuusoku] rest
休息時間[kyuusokujikan] recess

感歎符[kantanfu] exclamation point
感歎[kantan] admiration
驚歎[kyoutan] wonder
歎き[nageki] grief
歎く[nageku] to sigh

歎願[tangan] entreaty
歎声[tansei] sigh (of admiration or lamentation)
悲歎[hitan] grief
詠歎[eitan] exclamation
感歎詞[kantanshi] interjection