Understanding

Connections List
 * Dictionary
 * Wisdom
 * Knowledge
 * Wisdom words
 * Epistemology
 * Reason, logic

Scope
 * The word understanding

Etymology
 * binah (H) 998-999 - understanding

Definition
 * Knowledge (data and equations) plus active calculations or model space / connections. A mind.

Opposite is foolish

According to Rom 1:31 it may be a sin to no have understanding in certain areas? Or maybe it just means that it is clear they don't have understanding, or that it just goes along with other stuff.