1. lament, weep, bewail, bemoan; suffer. Grieve, mourn imply showing suffering caused by sorrow. Grieve is the stronger word, implying deep mental suffering often endured alone and in silence but revealed by one's aspect: to grieve over the loss (or death ) of a friend. Mourn usually refers to manifesting sorrow outwardly, either with or without sincerity: to mourn publicly and wear black. 2. sadden, pain.