medio-passiveadj.n.

1822 E. Everett tr. P. Buttmann Greek Gram. 194 Of the Active nothing but the Perfect γέγονα is in use; all the rest of either signification belongs to the medio-passive Voice.

1850 E. B. Eastwick tr. F. Bopp Compar. Gram. III. 1086 I think I discover the origin of the medio-passive participial suffix mâna, and of the cognate nominal suffix man, in the combination of two demonstrative bases ma and na.

1890 Mod. Lang. Notes 5 236/2 This word, the only relic in Middle English of the old medio-passive voice, should be fully explained.

1921 E. Sapir Lang. iv. 74 Of the seven suffixes..-o(ht) -indicates activity done for the subject (the so-called ‘middle’ or ‘medio-passive’ voice of Greek).

1934 R. C. Priebsch & W. E. Collinson German Lang. ii. vi. 296 Germanic retained in Gothic an inflected medio-passive present from Indo-European.

1972 Language 48 393 A reflexive—hence, by ergative criteria, mediopassive—form of the verb.

1990 Eng. World-wide 11 i. 131 Holm mentions medio-passive constructions in StE as related structures.

2007 J. Clackson & G. Horrocks Blackwell Hist. Lat. Lang. i. 33 Nothing analogous to this [sc. Latin passive and deponent endings in -r] is found in the medio-passive endings of Greek, Sanskrit or Gothic.

1845 Lit. Gaz. 27 Dec. 859/1 The medio-passive is clearly distinguished from the active by peculiar prefixes.

1888 Trans. & Proc. Mod. Lang. Assoc. Amer. 1887 3 201 To the medio-passive of the Greek corresponds, as is known, the Gothic passive.

1933 E. H. Sturtevant Compar. Gram. Hittite Lang. vi. 250 Hittite has a medio-passive, which has the same uses as the Gk. middle voice. It most frequently represents the subject as acting upon or in respect of himself.

1952 O. R. Gurney Hittites vi. 118 The verb has two voices—active and medio~passive.

1983 Eng. World-wide 4 70 The Indo-European perfect and mediopassive derive from the same desinential series.

2011 G. Beckman in S. R. Steadman & G. McMahon Oxf. Handbk. Anc. Anatolia iii. xxii. 527 The patterns differ only in the singular in the active present, preterite, and imperative, and solely in the third person singular throughout the medio-passive.

1972 D. L. F. Nilsen Eng. Adverbials 184 It was found that passivization co-occurs with only a subset of Manner Adverbials, and that Medio-passivization co-occurs with a different subset.

2007 M. Hundt Eng. Mediopassive Constr. iv. 59 Both passivization and medio-passivization tend to be cognitively more plausible when used with action verbs like sell.