Strong's #521: apaideutos (pronounced ap-ah'-ee-dyoo-tos)
from 1 (as a negative particle) and a derivative of 3811; uninstructed, i.e. (figuratively) stupid:--unlearned.
Thayer's Greek Lexicon:
̓́
apaideutos
1) without instruction, and disciple, uneducated, ignorant, rude
Part of Speech: adjective
Relation: from G1 (as a negative particle) and a derivative of G3811
Citing in TDNT: 5:596, 753
Usage:
This word is used 1 times:
2 Timothy 2:23: "But foolish and unlearned questions avoid, knowing that"