Lewis & Short

lāmentor, ātus, 1,

  1. I. v. dep. n. and a. [lamentum], to wail, moan, weep, lament (class.).
          1. (α) Neutr.: lamentari, cruciari, Plaut. Mil. 4, 2, 40: quod nunc lamentari, id. Pers. 1, 3, 94: praeter ceteras lamentari, Ter. And. 1, 1, 94: lapides flere ac lamentari cogere, Cic. de Or. 1, 57, 245: Hebiliter lamentari, id. Tusc. 2, 21, 49; id. Phil. 12, 1, 2: ac plangere, Suet. Ner. 49: quid ego hic animo lamentor, Enn. ap. Don. Ter. Phorm. 5, 4, 2 (Ann. v. 210 Vahl.): Thetis quoque lamentando pausam fecit filio, Plaut. Truc. 4, 2, 18.
          2. (β) Act., to weep over a person or thing, to bewail, lament, bemoan: conqueri fortunam advorsam, non lamentari decet, Id viri est officium; fletus muliebri ingenio additus est, Pac. ap. Cic. Tusc. 2, 21, 50 (Trag. Rel. v. 268 Rib.): nam haec quidem vita mors est, quam lamentari possem, Cic. Tusc. 1, 31, 75: caecitatem, id. ib. 5, 38, 112: se ipsum, Plaut. Pers. 4, 9, 7: suam matrem mortuam, Ter. Phorm. 1, 2, 46: ut nemo ad lamentandam tanti imperii calamitatem relinquatur, Cic. Cat. 4, 2, 4.
            With object.clause, Plaut. Ps. 1, 3, 79; so, cum lamentamur, non apparere labores Nostros, Hor. Ep. 2, 1, 224.
  2. II. Pass. (poet. and late Lat.; cf. lamento).
    Part. perf. in pass. signif. (poet.), wept over, bewailed: fata per urbem Lamentata, Sil. 13, 711; so, Dindyma, resounding with lamentations, Stat. Th. 12, 224.
      1. 2. Impers. pass.: maeretur, fletur, lamentatur diebus plusculis, App. M. 4, p. 157.