lament

If you are really upset or sorry about something, you might lament it. A lament is full of regret and grief.

If you lament something, then you feel sorry about it. You could lament a mistake you made, or you could lament a horrible thing that happened to a friend. Also, a lament is an expression of grief. So if you keep saying how sorry you are about something, someone could say, "Enough of your laments!" There's also an old literary form called "a lament," which expresses feelings of loss in a long dramatic poem.

Definitions of lament
1

n a cry of sorrow and grief

“their pitiful laments could be heard throughout the ward”
Synonyms:
lamentation, plaint, wail
Type of:
complaint
(formerly) a loud cry (or repeated cries) of pain or rage or sorrow

n a song or hymn of mourning composed or performed as a memorial to a dead person

Synonyms:
coronach, dirge, requiem, threnody
Types:
keen
a funeral lament sung with loud wailing
Type of:
song, vocal
a short musical composition with words

n a mournful poem; a lament for the dead

Synonyms:
elegy
Type of:
poem, verse form
a composition written in metrical feet forming rhythmical lines

v regret strongly

“we lamented the loss of benefits”
Synonyms:
bemoan, bewail, deplore
Type of:
complain, kick, kvetch, plain, quetch, sound off
express complaints, discontent, displeasure, or unhappiness

v express grief verbally

“we lamented the death of the child”
Synonyms:
keen
Type of:
express emotion, express feelings
give verbal or other expression to one's feelings

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