δεῖνα, ὁ, ἡ, τό,
genitive δεῖνος, dative δεῖνι, accusative δεῖνα: sometimes indeclinable (see. below): nominative δεῖν, ὁ, [[ 5th c.BC: Sophron Comicus 58: _genitive_ and _dative_ τοῦ δείνατος, τῷ δείνατι, 2nd c.AD: Apollonius Dyscolus Grammaticus “de Pronominibus;” 60.12, “Etymologicum Magnum” 614.51 ] Refs 5th c.BC+]:— such an one, so-and-so, always with Article, ὁ δεῖνα [[ 5th-6th c.BC: Aristophanes Comicus “Ranae” 918, etc.; τὸν δεῖνα τὸν τοῦ δεῖνα [prev. author] “Th.” 622; ὁ δεῖνα τοῦ δεῖνος τὸν δεῖν᾽ εἰσήγγειλεν 4th c.BC: Demosthenes Orator 13.5; ἃ ἂν ὁ δ. ἢ ὁ δ. εἴπῃ [prev. author] 2.31; ὁ δ. καὶ ὁ δ. 4th c.BC: Aristoteles Philosophus “Rhetorica” 1416a23; ἡ δεῖνα 2nd c.AD(?): Antoninus Liberalis Mythographus 22 ] Refs 5th c.BC+]; τὸ δ., euphemistic for τὸ πέος, [[ 5th-6th c.BC: Aristophanes Comicus “Acharnenses” 1149, cf. Scholia 2nd c.AD: Lucianus Sophista “Bis Acc.” 23; τὸ δ. δ᾽ ἐσθίει;] Refs 5th c.BC+] do you eat such a fish? [[ 4th c.BC: Antiphanes Comicus 129.6: in _genitive_, ἐμὸς ἢ τοῦ δεῖνος] Refs 4th c.BC+] mine or some other's, [[ 4th c.BC: Aristoteles Philosophus “Politica” 1262a3: _dative_, τῷ δεῖνι μεμφόμενος 4th c.BC: Demosthenes Orator 20.104, compare 37.56: _plural_, οἱ δεῖνες [prev. author] 24.180; τῶν δείνων [prev. author] 20.106. ] Refs 4th c.BC+]
__II τὸ δ. in Comedy texts as an interjection to express an idea which suddenly strikes one, by the way, mark you, [[ 5th-6th c.BC: Aristophanes Comicus “Vespae” 524, “Pax” 268, etc.: in later Prose, 2nd c.AD: Lucianus Sophista “Vit.Auct.” 19. ] Refs 5th c.BC+]