Abbott-Smith Manual Greek Lexicon
μωραίνω (G3471)
4 μωραίνω ( μωρός ), [in LXX: Is 19:11 , Je 10:14 28 (51):17 ( בּער ni.), II Ki 24:10 , Is 44:25 R ( סכל ni., pi.)*;] cl., to be foolish , play the fool . LXX and NT, causal, to make foolish : I Co 1:20 ; pass., to become foolish : Ro 1:22 ; of salt that has lost its flavour, become tasteless : Mt 5:13 , Lk 14:34 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain