1. bewail To mourn is to feel or express sadness or distress because of some loss, affliction, or misfortune; mourning is thought of as prolonged, grief or regret may be transient. One may grieve or Synonyms: mourn, bemoan, deplore, lament, regret, rue, sorrow, bewail, grieve Antonyms: be joyful, exult, joy, make merry, rejoice, triumph