ὀρχεῖσθαι (orcheisthai)
ὀρχεῖσθαι is an Ancient Greek form of ὀρχέομαι, meaning “dance”.
It can also be a form of ὀρχέω, “dance”. It is the present middle/passive infinitive.
Found 38 times in the Ancient Greek texts on Socratos.
Where it is used
Plutarch, Lycurgus 14.2: … ιατραφίαν καὶ θηλύτητα πᾶσαν οὐδὲν ἧττον εἴθισε τῶν κόρων τὰς κόρας γυμνάς τε πομπεύειν καὶ πρὸς ἱεροῖς τισιν ὀρχεῖσθαι καὶ ἄδειν τῶν νέων παρόντων καὶ θεωμένων.
All forms of ὀρχέομαι (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.