ἐπικουρεῖν (epikourein)
ἐπικουρεῖν is an Ancient Greek form of ἐπἐπικουρέω, meaning “(garbled form of ἐπικουρέω, help)”. It is the present active infinitive.
Found 50 times in the Ancient Greek texts on Socratos.
Where it is used
Thucydides, History of the Peloponnesian War 5.23.3: ταῦτα δ’ εἶναι δικαίως καὶ προθύμως καὶ ἀδόλως. ἢν δὲ ἡ δουλεία ἐπανιστῆται, ἐπικουρεῖν Ἀθηναίους Λακεδαιμονίοις παντὶ σθένει κατὰ τὸ δυνατόν.
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.