<p><strong>Verb (used with object):</strong></p><ul><li>to feel or express sorrow or regret for: to lament his absence.</li><li>Synonyms: deplore, bemoan, bewail.</li><li>to mourn for or over.</li><li>Synonyms: deplore, bemoan, bewail.</li></ul><p><strong>Verb (used without object):</strong></p><ul><li>to feel, show, or express grief, sorrow, or regret.</li><li>Synonyms: weep, grieve.</li><li>to mourn deeply.</li><li>Synonyms: weep, grieve.</li></ul><p><strong>Noun:</strong></p><ul><li>an expression of grief or sorrow.</li><li>Synonyms: moan, lamentation.</li><li>a formal expression of sorrow or mourning, especially in verse or song; an elegy or dirge.</li><li>Synonyms: threnody, monody.</li></ul>