Easton's Bible Dictionary
A moral rather than an intellectual quality. To be "foolish" is to be godless (Psalm 14:1; Comp. Judges 19:23; 2 Samuel 13:13). True wisdom is a gift from God to those who ask it (Job 28:12-28; Proverbs 3:13-18; Romans 1:22; 16:27; 1 Corinthians 1:17-21; 2:6-8; James 1:5). "Wisdom" in Proverbs 1:20; 8:1; 9:1-5 may be regarded not as a mere personification of the attribute of wisdom, but as a divine person, "Christ the power of God and the wisdom of God" (1 Corinthians 1:24). In Matthew 11:19 it is the personified principle of wisdom that is meant.
Noah Webster's New International Dictionary of the English Language
1. (n.) The quality of being wise; knowledge, and the capacity to make due use of it; knowledge of the best ends and the best means; discernment and judgment; discretion; sagacity; skill; dexterity.
2. (n.) The results of wise judgments; scientific or practical truth; acquired knowledge; erudition.