Aptness

Apt·ness

Aptness

n.
  1. Fitness; suitableness; appropriateness; as, the aptness of things to their end.
    The aptness of his quotations.
    — J. R. Green.
  2. Disposition of the mind; propensity; as, the aptness of men to follow example.
  3. Quickness of apprehension; readiness in learning; docility; as, an aptness to learn is more observable in some children than in others.
  4. Proneness; tendency; as, the aptness of iron to rust.