INABIL'ITY, noun [Latin inhabilis; in and habilis.]

1. Want of sufficient physical power or strength; as the inability of a man to raise an arm or a leg.

2. Want of adequate means; as an inability to purchase a farm, or to fit out a ship.

3. Want of moral power. Moral inability is considered to be want of inclination, disposition or will, or a deep-rooted aversion to act, and therefore improperly so called.

Moral inability aggravates our guilt.

4. Want of intellectual strength or force; as an inability to comprehend a mathematical demonstration.

5. Want of knowledge or skill; as an inability to read or write.