In Plautus and elsewhere in old Latin there is an imperative suffix -mino of medio-deponential meaning: opperimino, PL True. 188 , progredimino, id. Pseud. 859, arbitramino, id. Epid. 695, praefamino, Cato, RR. 141, 2, famino Paul. Fest. 62, 10, Th., all 2 sg.; in legal documents, antestamino , in the XII Tables, fruimino , CIL. 1, 199, profitemino in Lex Iulia Municipalis, all 3 sg. The generally accepted explanation of the form is that it arose from a contamination of the (...) ordinary 2 pl. medio-passive imperative in -mini and the 2, 3 sg. forms in -to, Lindsay, Latin Language, p. 517, Von Planta, Gramm. d. oskisch-umbr. Dial. II, pp. 310 sqq., Buck, Elementarb. d. oskisch-umbr. Dial. p. 112, Sommer, Hdb. d. lat. Laut- u. Formenlehre, p. 366, Stolz, Lat. Gramm*. p. 158. The Oskan and the Umbrian forms in -mo, -mu, U. spahamu, eturstahmu, persnimu, O. censamur, all of 2 or 3 sg., and U. arsmahamo, caterahamo of 2 or 3 pi., are identified with the Lat. -minō forms on the assumption that the Osk-Umbr. -mu represents an older *-mnō which in turn arose by syncope from -*menō Von Planta, l.c. This explanation is the most satisfactory that has been given, and we may suppose that Latin, Oskan, and Umbrian had an imperative form in *-menō. (shrink)