Grieve over is a term used to describe a feeling of deep sorrow or distress. BEWAIL, BEMOAN, REGRET, and DEPLORE are all words that can be used to express this emotion. BEWAIL means to express deep sorrow or distress, BEMOAN means to express sorrow or lament, REGRET means to feel sorrow or remorse for an action, and DEPLORE means to express strong disapproval or REGRET. All of these words can be used to describe the feeling of grief over something.