καθήκειν (kathekein)
καθήκειν is an Ancient Greek form of καθήκω, meaning “come down; be fitting”. It is the present active infinitive.
Found 43 times in the Ancient Greek texts on Socratos.
Where it is used
Plutarch, Brutus 12.3: … ἐμφύλιον, ὁ δὲ Στατίλιος ἔφη τῷ σοφῷ καὶ νοῦν ἔχοντι διὰ φαύλους καὶ ἀνοήτους κινδυνεύειν καὶ ταράττεσθαι μὴ καθήκειν.
All forms of καθήκω (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.