repose of a soul; happiness in the afterlife
Almost exclusively used in the set phrase 冥福を祈る (to pray for the repose of someone's soul). The reading みょうふく is a less common variant.
See also: 冥福を祈る
I sincerely pray for the repose of the deceased's soul.
Many people gathered and prayed for the happiness of the victims in the next world.
He prayed for the repose of his late grandfather's soul.
Search-only mixed kanji-kana form; not a standard written variant.