感嘆[kantan] admiration
感嘆符[kantanfu] exclamation point
驚嘆[kyoutan] wonder
嘆かわしい[nagekawashii] sad
嘆き[nageki] grief

嘆き悲しむ[nagekikanashimu] to grieve and moan
嘆く[nageku] to sigh
嘆願[tangan] entreaty
嘆声[tansei] sigh (of admiration or lamentation)
嘆息[tansoku] sigh

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