G0454
ἄνοια
folly
ἀνοια, -ας, ἡ (ἄ-νοος, without understanding), [in LXX: Pro.14:8, 2215 (אִוֶּלֶת), Wis.15:18, al. ;] folly, foolishness: 2Ti.3:9; expressed in violent rage (cf. Plat., Tim., 86B): Luk.6:11.† (AS)
Full Thayer's lexicon entry
ἄνοια — ánoia
ἄνοια, ἀνοίας, ἡ (ἄνους (i. e. Ανως without understanding)), want of understanding, folly: 2Ti 3:9. madness expressing itself in rage, Luk 6:11 (δύο δ' ἀνοίας γένη, τό μέν μανίαν, τό δέ ἀμαθιαν, Plato, Tim., p. 86 b.). ((Theognis, 453); Herodotus 6, 69; Attic writings from Thucydides down.)
2 occurrences
Luke (1), II Timothy (1)