Strong's G521 · Greek

ἀπαίδευτος

apaideutos · ap-ah'-ee-dyoo-tos

from 1 (as a negative particle) and a derivative of 3811; uninstructed, i.e. (figuratively) stupid

Scholarly Lexicons

Abbott-Smith Manual Greek Lexicon

 1 ἀ-παίδευτος , -ον ( παιδεύω ), [in LXX for כְּסִיל , etc., chiefly in Wi. lit.;] uninstructed , ignorant : II Ti 2:23 .† 

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