The fool in Psalm 14, Prov. 17:7 is nabal, which means empty, senseless, insulting, arrogant, irreligious and presumptuous! He’s not the kind of person we like to be around! The fool (evil) in this verse is not much better. This word is the opposite of understanding (tebunah, Pr. 2:2, 3, 6, 11). He is, however, more like a simpleton. He scorns wisdom and discipline (15:5), mocks at guilt (14:9). He is quarrelsome (20:3), and licentious (7:22). It is quite useless to instruct him (16:22, 27:22). He is never wrong! He has such exalted airs about himself! “I am sir oracle, and when I ope my lips, let no dog bark!” “The person who always knows best may be the only one unconscious of his real name” (Kidner). Such a fool is more to be pitied than disliked, but no less dangerous.