哀愁[aishuu] pathos
郷愁[kyoushuu] nostalgia
愁傷[shuushou] grief
愁訴[shuuso] complaint
幽愁[yuushuu] deep contemplation

愁い[urei] sorrow
愁い顔[ureigao] sad face
憂愁[yuushuu] melancholy
旅愁[ryoshuu] loneliness on a journey
愁える[ureeru] to grieve

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