(adj.adv.) : plērusque, răque, rumque, adj.a strengthened form from plerus
* Very many, a very great part, the most, most (rare in sing., and only in Sall. and post-class. writers; but in plur. freq. in all periods and styles).
* Plur.: habent hunc morem plerique argentarii,Plaut. Curc. 3, 7: pleraeque hae (meretrices) sub vestimentis secum habebant retia,id. Ep. 2, 2, 32; Ter. Eun. 1, 2, 38: multi nihil prodesse philosophiam, plerique etiam obesse arbitrantur,Cic. Inv. 1, 36, 65: ut plerique meministis,id. Sest. 3, 6: plerique Belgae,Caes. B. G. 2, 4: pleraeque boves,Varr. R. R. 2, 5: pleraque tecta ... alia, etc.,Liv. 27, 3.—With ex and abl.: plerique e Graecis,Plin. 5, 1, 1, § 8: plerisque ex factione ejus corruptis,Sall. J. 29, 2.—With omnes, almost all: plerique omnes subiguntur sub suum judicium, Naev. ap. Don. ad Ter. And. 1, 1, 28 (Naev. Klussmann, p. 80): plerique omnes adulescentuli,id. ib. 1, 1, 28; cf.: dixi pleraque omnia,id. Heaut. 4, 7, 2.—Less emphatically, a considerable part, very many: rapti e publico plerique, plures in tabernis intercepti,Tac. H. 1, 86; so, like plures: non dubito fore plerosque, qui hoc genus scripturae leve judicent, Nep. praef. 1: pleraque testimonia,id. Tim. 4, 2: deum ipsum multi Aesculapium, quidam Osirim, plerique Iovem, plurimi Ditem patrem conjectant,Tac. H 4, 84 fin.—With gen.: plerique nostrūm oratorum,Cic. Or. 42, 143: Poenorum,Cic. Verr. 2, 3, 6, § 12: vestrum,id. Clu. 42, 117: quorum plerique,id. Lael. 20, 71; Sall. J. 74, 1: urbium pleraeque,Liv. 5, 6, 9: eorum plerique,Cic. Top. 21, 80; id. Fam. 5, 21, 1: legentium, Liv. praef. 4: Graecorum,Plin. Ep. 5, 20, 4: militum,Tac. H. 1, 5.— Gen. plur. (rare and post-class.): scientia plerarumque litterarum,Vitr. 1, 1, 11.— Subst.: plērăque, n. plur., all, every thing: nec ratione animi quicquam, sed pleraque viribus corporis administrabant,Cic. Inv. 1, 2.—Also, the most, the greatest part.: pleraque ejus insulae,Curt. 4, 8, 15. —plērăque, adverb., mostly, for the most part (post-class.): is erit pleraque impeccabilis,Gell. 17, 19, 6.
* Sing.: juventus pleraque Catilinae favebat, the greatest or largest part, Sall. C. 17, 6: pleraque nobilitas,id. ib. 23, 6: quā tempestate Carthaginienses pleraeque Africae imperitabant,id. J. 79, 2: exercitum plerumque opperiri jubet,id. ib. 54, 9: Graecia,Gell. 17, 21: comae pleramque contegebant faciem,App. M. 9, p. 231, 5.—Neutr.: plērum-que, subst., with gen., the greatest part: ubi plerumque noctis processit,Sall. J. 21, 2: Europae,Liv. 45, 9; Just. 41, 1, 12; Mel. 1, 4, 2.—More freq.: plērumquē, adv., for the most part, mostly, commonly, very often, very frequently: haec ipsa fortuita sunt: plerumque enim non semper eveniunt,Cic. Div. 2, 5, 14: plerumque casu, saepe naturā,id. Or. 51, 170; Plaut. Rud. 4, 7, 11: ridiculum acri Fortius et melius magnas plerumque secat res,Hor. S. 1, 10, 15: hi plerumque gradus,usually,Juv. 11, 46.—Post-Aug., in a less emphatic sense, often, frequently: plerumque permoveor, num ad ipsum referri verius sit,Tac. A. 4, 57; id. H. 5, 1; id. G. 13; 45; id. Or. 15; Dig. 2, 14, 25 and 26.

s. TLL