一喜一憂[ikkiichiyuu] now rejoicing, now worrying
内憂[naiyuu] internal or domestic troubles
内憂外患[naiyuugaikan] troubles both at home and abroad
もの憂い[monoui] languid
憂い[ui] unhappy

憂い[urei] sorrow
憂い顔[ureigao] sad face
憂い悩む[ureinayamu] to be grievously troubled
憂さを晴らしに[usawoharashini] for amusement
憂欝症[yuuutsushou] melancholia