grieve

Short definition from Wiktionary

Verb

1. 1
   To cause sorrow or distress to.
2. 2
   To feel very sad about; to mourn; to sorrow for.
3. 3
   To experience grief.
4. 4
   To harm.
5. 5
   To submit or file a grievance (about).

Noun

1. 1
   A governor of a town or province.
2. 2
   A manager or steward, e.g. of a farm.

Proper noun

1. 1
   A surname.