ἄφρων, -ον gen. -ονος
(< φρήν), [in LXX for כְּסִיל, נָבָל, etc.;]
without reason, senseless, foolish, expressing "want of mental sanity and sobriety, a reckless and inconsiderate habit of mind" (Hort; cf. MM, s.v.): Lk 11:4012:20, Ro 2:20, I Co 15:36, II Co 11:1612:6, 11, I Pe 2:15; opp. to φρόνιμος, II Co 11:19; to συνιέντες, Eph 2:17.†