grieve
v.to feel very deep sadness, especially because someone you love has died. You might also use this when you lose something very important to you.
v.to experience intense sorrow or distress, typically following the death of a loved one. Often used intransitively with 'for' or 'over'.
“She needs time to grieve for her father.”
“The entire community gathered at the park to grieve the loss of the historic library after the fire.”
“Psychologists suggest that individuals must be allowed to grieve at their own pace, as the process of reconciling with a permanent loss rarely follows a linear or predictable timeline.”
Can be used intransitively (to grieve for someone) or transitively (to grieve a loss).
When expressing the person being mourned, use the preposition 'for' rather than 'of'.
“Other families continue to grieve as they seek answers about their relatives killed in US airstrikes.”
“Then there is the pet hamster, who we see being held, adored and then grieved for as it rests in its cardboard coffin.”