満更夢ではない[manzarayumedehanai] not altogether a dream
悪夢[akumu] nightmare
一炊の夢[issuinoyume] an empty dream
一夢[ichimu] (a) dream
旧夢[kyuumu] ancient dream

凶夢[kyoumu] bad dream
初夢[hatsuyume] year's first dream
酔生夢死[suiseimushi] idling one's life away
正夢[masayume] dream that comes true

儚い[hakanai] fleeting
儚くなる[hakanakunaru] to die

儚む[hakanamu] to despair of

薨去[koukyo] death

薨ずる[kouzuru] to die (of a nobleman, etc.)