Quick Definition
ἄνοια, ας, ἡ n.f. folly, madness
Strong's Definition
from a compound of 1 (as a negative particle) and 3563; stupidity; by implication, rage
KJV Usage: folly, madness
UBS Dictionary of the Greek New Testament
noun, f. | -ας | ἀ- + νοέω
32.51 · Understand · Lack of Capacity for Understanding
to lack understanding, absence of understanding the state of being devoid of understanding ἄνοια does not imply in 2TI 3:9 that people are incapable of understanding, but that they evidently are unwilling to understand.
88.183 · Moral and Ethical Qualities and Related Behavior · Anger, Be Indignant With
extreme fury, great rage a state of such extreme anger as to suggest an incapacity to use one’s mind
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
ἄνοια, -as, 7, (ἄνους [i. 6. ἄνοος without understanding]), want of understanding, folly: 2 Tim. iii. 9. madness expressing itself in rage, Lk. vi. 11, [δύο δ᾽ ἀνοίας γένη, τὸ μὲν μανίαν, τὸ δὲ ἀμαθίαν, Plato, Tim. p. 86 b.]. ({Theogn. 453]; Hdt. 6,69; Attic writ. fr. Thuc. down.)
Mounce Concise Greek Dictionary
ἄνοια anoia 2x
want of understanding; folly, rashness, madness, Lk. 6:11; 2 Tim. 3:9*
Abbott-Smith Greek Lexicon
ἄνοια, -ας, ἡ
(< ἄ-νοος, without understanding), [in LXX: Pr 14:8 22:15 (אִוֶּלֶת), Wi 15:18, al.;]
folly, foolishness: II Ti 3:9; expressed in violent rage (cf. Plat., Tim., 86B): Lk 6:11.†
Liddell-Scott-Jones — Greek-English Lexicon
ἄνοια (anoia) — folly. ἄνοια, Epic dialect ἀνοίη [Refs 6th c.BC+], ἡ:— the character of an ἄνοος, want of understanding, folly, ἀνοίη in folly, [Refs 5th c.BC+]; πολλῆ ἀνοια χρῆσθαι to be a great fool, [Refs 5th c.BC+]; ἄνοιαν ὀφλισκάνειν to be thought a fool, [Refs 5th c.BC+]; but opposed to μανία, [Refs]: plural, follies, [Refs 5th c.BC+]