LogeionPerseus analysis of που:
πού: enclitic indeclform (adverb)
LSJ entry
(NB. This dictionary headword is a guess.)
ποῦ
ποῦ,
Ion. κοῦ,
interrog. Adv. II. of manner, how? E. IA 406,
Or. 802;
to express an inference very strongly, κοῦ γε δὴ . . οὐκ ἂν χωσθείη κόλπος . .; how then would it not . . ?
i.e. it certainly would . . ,
Hdt. 2.11,
cf. Th. 8.27 codd.; in Trag., in indignant questions, how? by what right? π. σὺ στρατηγεῖς τοῦδε; S. Aj. 1100;
ποῦ σὺ μάντις εἶ σαφής; Id. OT 390,
cf. Ph. 451,
E. Heracl. 369 (lyr.), 510;
π. γάρ ἐστι δίκαιον; D. 37.41,
cf. 23.58.