Other forms: mourning, mourned, mourns
To mourn is to feel and show deep sorrow for somebody who has died. Mourn a friend, mourn the loss, in mourning.
The preposition is for, or none at all: mourn her, mourn for her. In mourning describes the formal period after a death, and mourning dress was black in Britain for a fixed period by custom. It is also used of things: mourn the loss of a building, mourn the passing of a way of life. Note mourner, mournful; and that mourn and morn are homophones and unrelated.
1verbmournTo feel and show deep sorrow for somebody who has died.
“The whole country mourned the death of the much-loved king.”
mourn is a grieving.
Also accepted in games: grieve
Old English murnan meant to grieve or to be anxious, from a Germanic root about remembering. Mourning and memory are distantly the same idea, which is a fair account of grief.
Proto-Indo-European
*(s)mer- (remember)
Proto-Germanic
*murnaną
Old English
murnan
Middle English
mornen
English, today
mourn
From Middle English mornen, mournen, from Old English murnan, from Proto-Germanic murnaną. Cognate with French morne (“gloomy”).
Etymology from Wiktionary, CC BY-SA