ὑπῆρχεν (hyperchen)
ὑπῆρχεν is an Ancient Greek form of ὑπάρχω, meaning “begin; be at hand; exist”. It is the 3rd person singular imperfect active indicative.
Found 174 times in the Ancient Greek texts on Socratos.
Where it is used
Thucydides, History of the Peloponnesian War 2.13.9: ταῦτα γὰρ ὑπῆρχεν Ἀθηναίοις καὶ οὐκ ἐλάσσω ἕκαστα τούτων, ὅτε ἡ ἐσβολὴ τὸ πρῶτον ἔμελλε Πελοποννησίων ἔσεσθαι καὶ ἐς τὸν πόλεμον καθίσταντο. ἔλεγε δὲ καὶ ἄλλα οἷάπερ εἰώθει Περικλῆς ἐς ἀπόδειξιν τοῦ περιέσεσθαι τῷ πολέμῳ.
All forms of ὑπάρχω (conjugation table)
Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Liddell-Scott-Jones, A Greek-English Lexicon (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.