ὅπου · hopou — LSJ
as a Relat., sts. c. gen. loci, τῆς πόλεως ὅπου κάλλιστον στρατοπεδεύσασθαι Pl. R. 415d, cf. Hdt. 2.172 ; ὅπου βούλοιτο τοῦ δρόμου X. HG 2.4.27 ; ἔσθʼ ὅπου in some places, A. Eu. 517 (lyr.), Fr. 302 : standing for the Relat. Adj., μέλη, ὅπου (i. e. ἐν οἷς) χελιδὼν ἦν τις ἐμπεποιημένη Ar. Av. 1301 : with other Particles, ὅκου δή somewhere or other, Hdt. 3.129 ; ὅπου ἄν wherever, with subj., IG 1(2).76.11, etc.; in Trag. the ἄν may be omitted, as ὅπου δʼ Ἀπόλλων σκαιὸς ᾖ, τίνες σοφοί; E. El. 972,
in indirect questions, ὄφρα πύθηαι πατρός, ὅπου κύθε γαῖα Od. 3.16, cf. 16.306, S. OT 924, etc.: with Verbs of motion in pregnant sense, ὅκου ἐτράπετο, οὐκέτι εἶχον εἰπεῖν Hdt. 2.119 ; κεῖνος δʼ ὅπου βέβηκεν, οὐδεὶς οἶδε S. Tr. 40, v.l. in X. Cyr. 3.1.37, etc.: in many passages editors have in this sense restd. ὅποι, mostly from codd. ; in repeating a question, ἡ Λακεδαίμων ποῦ ʼστιν; Answ. ὅπου ʼστίν; (do you ask) where it is? Ar. Nu. 214 : c. gen., εἰδότες ὅκου γῆς εἴη Hdt. 4.150, cf. Pl. R. 4
the strict local sense occasionally passes into,
a sense involving Time or Occasion, ὅ. τινʼ ἴδῃ Thgn. 922, cf. 999, X. HG 3.3.6 ; σιγᾶν θʼ ὅ. δεῖ καὶ λέγειν τὰ καίρια A. Ch. 582, cf. Eu. 277 ; οὐκ ἔσθʼ ὅ. there is no case in which, i.e. in no case. S. OT 448, Aj. 1069, E. HF 186, D. 3.35 ; so ἔστιν ὅ.; as a question, Id. 18.22.
of Cause, whereas, Hdt. 1.68, 4.195, Antipho 1.7; ὅ. γὰρ ἐγὼ . . ὁμολογῶ D. 21.205 ; ὅκου γε, Lat. quandoquidem or quippe, Hdt. 7.118 ; ὅπου γε X. Cyr. 2.3.11, etc.
later as a demonstr. Adv., only in the phrase ὅ. μέν . . , ὅ. δέ . . here . . , there . . , Plu. Def.orac. 2.427c, S.E. P. 1.53, etc.