Quick Definition
untrained, uneducated
Strong's Definition
uninstructed, i.e. (figuratively) stupid
Derivation: from G1 (Α) (as a negative particle) and a derivative of G3811 (παιδεύω);
KJV Usage: unlearned
Thayer's Greek Lexicon
ἀπαίδευτος, ἀπαίδευτον (παιδεύω), without instruction and discipline, uneducated, ignorant, rude (Winer's Grammar, 96 (92)): ζητήσεις, stupid questions, 2Ti_2:23. (In classics from (Euripides) Xenophon down; the Sept.; Josephus.)
Mounce Concise Greek Dictionary
ἀπαίδευτος apaideutos 1x
uninstructed, ignorant; silly, unprofitable, 2Ti_2:23
Abbott-Smith Greek Lexicon
ἀ -παίδευτος , -ον
( < παιδεύω ),
[in LXX for H3685 , etc., chiefly in Wis. lit.;]
uninstructed, ignorant: 2Ti_2:23 .†
Moulton & Milligan — Vocabulary of the Greek NT
ἀπαίδευτος [page 51]
In P Oxy I. 33 ii. 18 (late ii/A.D.) Appianus does not hesitate to charge the Emperor (? Marcus Aurelius) with τυραννία ἀφιλοκαγαθία ἀπαιδία as contrasted with the virtues of his deified father Antoninus who was φιλόσοφος . . . ἀφιλάργυρος . . . φιλάγαθος . See Archiv i. p. 37.
Liddell-Scott — Intermediate Greek Lexicon
ἀπαίδευτος [Etym: παιδεύω] "uneducated", Eur. , Plat. :— c. gen. "uninstructed in" a thing, Xen. "ignorant, boorish, coarse", Eur. , Plat. adv., ἀπαιδεύτως ἔχειν to be "without education", Eur.
STEPBible — Tyndale Abridged Greek Lexicon
ἀ-παίδευτος, -ον
(παιδεύω), [in LXX for כְּסִיל, etc., chiefly in Wis. lit. ;]
uninstructed, ignorant: 2Ti.2:23.†
(AS)