n.
Function: noun
Date: 1590
1 : sorrow aroused by circumstances beyond one's control or power to repair
2 a : an expression of distressing emotion (as sorrow or disappointment) b plural : a note politely declining an invitation
synonyms see SORROW
– re · gret · ful \ - ' gret-f ə l \ adjective
– re · gret · ful · ness noun