Lexical Definition

‎ἀνόητος‎ anóētos (an-o'-ay-tos) foolish ^G:A
from ‎Α‎ (as a negative particle) and a derivative of ‎νοιέω‎

fool(-ish), unwise.

• unintelligent
• by implication, sensual

Abbott-Smith

ἀ-νόητος, -ον (ἀ- neg., νοητός; < νοέω), [in LXX: Pr 17:28 (אֱוִיל), Si 42:8, al.;]
1. not thought on, not understood (Hom., Plat.).
2. not understanding, foolish (Hdt., al., LXX): Lk 24:25, Ro 1:14, Ga 3:1, 3, I Ti 6:9, Tit 3:3 (Cremer, 438, 790; MM, VGT, s.v.).†
SYN.: ἀσύνετος (v. Tr., Syn., § lxxv).

Abbott-Smith References

Liddell-Scott-Jones

ἀνόητος-ητος, ον,

not thought on, unheard of, ἄφραστ᾽ ἠδ᾽ ἀνόητοςητα[Refs]

__2 not within the province of thought, νοήματα ὄντα ἀνόητοςητα εἶναι[Refs 5th c.BC+]; not the object of thought, unthinkable, [Refs 3rd c.AD+]adverb -τως without discursive thought, of vision, βλέψαι ἀ.[Refs]
__II active, not understanding, unintelligent, senseless, silly, [Refs 5th c.BC+]; ὦ ἀνόητοςητοι oh fools! [Refs 5th c.BC+]; opposed to προνοητικός, [Refs 5th c.BC+]: comparative -ότερος[Refs 2nd c.AD+]; τὸ ἀ., opposed to τὸ νοῦν ἔχον, [Refs 5th c.BC+]
__II.b with genitive, not understanding, θεοῦ[Refs 2nd c.AD+]
__II.2 of acts, thoughts, etc., ἀ. γνῶμαι[Refs 5th c.BC+]; οἴνου.. καὶ τῶν ἄλλων ἀνοήτων and all other follies, [Refs]
__II.2.b without mind, ἀνόητοςητα καὶ ἄνευ ζωῆς[Refs 3rd c.AD+]
__III adverb -τως[Refs 5th c.BC+]: superlative -ότατα[Refs 2nd c.AD+]:—also ἀνο-ητεί, [Refs]