grieve over

grieve over (someone or something)

To experience intense feelings of sadness or mourning due to a particular loss (often the death of a loved one). It's been years since my mother died, and I'm still grieving over her. I know I need to grieve over the end of our relationship, but I'm just sick of crying. You need time to grieve over what you lost by growing up in such a dysfunctional household.
See also: grieve, over
Farlex Dictionary of Idioms.

grieve over someone or something

to lament and pine for someone or something. Now, don't grieve over a lost cat. There is no reason to continue grieving over him.
See also: grieve, over
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • grieve over (someone or something)
  • grieve
  • grieve for
  • grieve for (someone or something)
  • empty nest syndrome
  • drive (one) to despair
  • drive to despair
  • a sad sight
  • hurt feelings
  • lump to (one's) throat