κέρδει (kerdei)
κέρδει is an Ancient Greek form of κέρδος, meaning “gain, profit”. It is the dative singular neuter noun.
Found 30 times in the Ancient Greek texts on Socratos.
Where it is used
Thucydides, History of the Peloponnesian War 3.38.2: καὶ δῆλον ὅτι ἢ τῷ λέγειν πιστεύσας τὸ πάνυ δοκοῦν ἀνταποφῆναι ὡς οὐκ ἔγνωσται ἀγωνίσαιτ’ ἄν, ἢ κέρδει ἐπαιρόμενος τὸ εὐπρεπὲς τοῦ λόγου ἐκπονήσας παράγειν πειράσεται.
Hesiod, Works and Days 644: μείζων μὲν φόρτος, μεῖζον δʼ ἐπὶ κέρδεϊ κέρδος
All forms of κέρδος (declension 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.