ὑποσχεῖν (hyposchein)
ὑποσχεῖν is an Ancient Greek form of ὑπέχω, meaning “hold under; submit to”. It is the aorist active infinitive.
Found 81 times in the Ancient Greek texts on Socratos.
Where it is used
Thucydides, History of the Peloponnesian War 3.81.2: … ὅσους ἔπεισαν ἐσβῆναι ἐκβιβάζοντες ἀπεχρῶντο, ἐς τὸ Ἥραιόν τε ἐλθόντες τῶν ἱκετῶν ὡς πεντήκοντα ἄνδρας δίκην ὑποσχεῖν ἔπεισαν καὶ κατέγνωσαν πάντων θάνατον.
All forms of ὑπέχω (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.