Properly, the same as the base of phos and phaino; to show or make known one's thoughts, i.e. Speak or say -- affirm, say. Compare lego.
see GREEK phos
see GREEK phaino
see GREEK lego
ἔφη (ephē) − 43 Occurrences
φασίν (phasin) − 1 Occurrence
φημι (phēmi) − 4 Occurrences
φησιν (phēsin) − 18 Occurrences