遺誡[ikai] one's last caution
誡める[imashimeru] to admonish
訓誡[kunkai] warning
誡告[kaikoku] warning

教誡[kyoukai] counselling (often of imprisoned criminals by a chaplain, etc.)
十誡[jikkai] the 10 precepts
誡め[imashime] caution

遺愛[iai] bequest
遺影[iei] portrait of deceased person
遺詠[iei] posthumous song or poem
遺家族[ikazoku] bereaved family
遺誡[ikai] one's last caution

遺骸[igai] remains
遺憾[ikan] regrettable
遺業[igyou] work left at death
遺訓[ikun] dying instructions
遺賢[iken] able men left out of office