Mourn is the generic term, denoting a state of grief or sadness. To lament is to express grief by outcries, and denotes an earnest and strong expression of sorrow. To deplore marks a deeper and more prolonged emotion. To bewail and to bemoan are appropriate only to cases of poignant distress, in which the grief finds utterance either in wailing or in moans and sobs. A man laments his errors, and deplores the ruin they have brought on his family; mothers bewail or bemoan the loss of their children.