Strong's G3766 · Greek

οὐκοῦν

oukoun · ook-oon'

from 3756 and 3767; is it not therefore that, i.e. (affirmatively) hence or so

Scholarly Lexicons

Abbott-Smith Manual Greek Lexicon

 1 οὐκοῦν , adv. ( οὔκουν , not therefore ), with the negative element lost, therefore , so then : Jo 18:37 .† 

G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain