Shrewdness, prudence — the survival-craft Wisdom gives the naive (1:4). Its root is the serpent's: the snake of Genesis 3:1 was arum, 'crafty' (KJV 'subtil'), and KJV renders THIS word 'subtilty' too — the same cunning that ruined Eden, redeemed here into the sense that keeps the simple alive. → first discussed at Gen 1:4