grieving Definition

grieve¹
verb grieved, grieving

intr
1. To feel or show grief, especially at a death.

Thesaurus: mourn, lament, sorrow, pine, rue, regret, agonize, suffer.
2. To upset or distress someone.

Example: It grieves me to learn that he's still on drugs
Thesaurus: sadden, hurt, harrow, pain, wound, hurt.

Etymology: 13c: from French grever to grieve, from Latin gravare to burden.