Extended Strong's Greek Lexicon (Abbott-Smith based)
foolish
Usage: ἀ-νόητος, -ον (ἀ- neg., νοητός; νοέω), [in LXX: Pro.17:28 (אֱוִיל), Sir.42:8, al. ;] __1. not thought on, not understood (Hom., Plat.). __2. not understanding, foolish (Hdt., al., LXX): Luk.24:25, Rom.1:14, Gal.3:1, 3, 1Ti.6:9, Tit.3:3 (Cremer, 438, 790; MM, VGT, see word).† SYN.: ἀσύνετος (see Tr., Syn., § LXXv) (AS)