Lewis & Short

ē-lŏquor, ēlŏcūtus (or ēloquūtus), 3, v. dep. a., to speak out, speak plainly, to utter; to pronounce, declare, state, express: eloqui hoc est, omnia quae mente conceperis promere atque ad audientes perferre, Quint. 8 prooem. § 15 (class.).

  1. I. In gen. (so most freq. in Plautus).
          1. (α) With acc.: id quod sentit eloqui non posse, Cic. Tusc. 1, 3, 6; so, praeclare cogitata mentis, id. Brut. 72 fin.: audita, Plaut. Am. 1, 1, 45: nomen meum, id. ib. prol. 18: argumentum hujus tragoediae, id. ib. 51; 96: rem, ut facta est, id. ib. 4, 5, 8 et saep.: ille unum elocutus, ut memoria tenerent milites, etc., * Caes. B. C. 2, 34, 5: Gratum elocuta consiliantibus Junone divis "Ilion, Ilion," etc., Hor. C. 3, 3, 17 et saep.
          2. (β) Absol., Plaut. Aul. 2, 1, 48; id. Curc. 2, 3, 29: perge eloqui, Ter. Ph. 4, 3, 36: eloquar an sileam? Verg. A. 3, 39 et saep.
  2. II. In partic., to speak in an oratorical or eloquent manner (only absol.): et Graece ab eloquendo ῤήτωρ et Latine eloquens dictus est, etc., Cic. Or. 19; cf. Quint. 10, 1, 3: eloqui copiose melius est, quam vel acutissime sine eloquentia cogitare, Cic. Off. 1, 44, 156; cf.: composite, ornate, copiose eloqui, id. de Or. 1, 11, 48: eloquendi facultas, Quint. 10, 1, 69 et saep.
    Hence, ēlŏquens, entis, P. a.
  1. I. Speaking, endowed with the faculty of speech: cum res muta fit eloquens, Auct. Her. 4, 53.
  2. II. Eloquent (for syn. cf.: facundus, disertus, etc.): Is est eloquens, qui et humilia subtiliter et magna graviter et mediocria temperate potest dicere, etc., Cic. Or. 29, 100 sq.; cf. id. ib. 36, 19: M. Antonius disertos ait se vidisse multos, eloquentem omnino neminem, id. ib. 5, 18 sq.; id. de Or. 1, 21; Quint. 8 prooem. § 13; 12, 1, 21; cf. Plin. Ep. 5, 20, 5: rhetor, Cic. N. D. 2, 1: senator (Cato), Quint. 11, 1, 36: vir, Vulg. Act. 18, 24 et saep.
    Comp., Quint. 12, 6, 6; App. Mag. p. 8 Bip.
    Sup., Quint. 1, 1, 21; 4, 2, 58; 5, 13, 3; 8 prooem. § 13; Cic. Brut. 39, 145; Tac. Agr. 10 al.
    Adv.: ēlŏquen-ter, eloquently: eloquenter, λογίως, Gloss.
    Comp.: eloquentius quam prius scribitur, Plin. Ep. 3, 18, 6.
    Sup.: eloquentissime respondere, Plin. Ep. 2, 11, 17; 6, 21, 4.
    Note: ēlŏcūtus, a, um, in pass. signif.: an quaedam extrinsecus sint elocuta, Dig. 3, 2, 13, § 6.