ˈap(t)nə̇s noun
( -es )
: the quality or state of being apt:
a. : fitness , suitableness
the universal aptness of a religious system — A.W.Kinglake
b. : habitual tendency or inclination : likelihood
the aptness of iron to rust
: propensity , proneness
the aptness of men to sin
c. : appropriateness , appositeness
this last metaphor has a peculiar aptness — F.R.Leavis
d. : mental alertness : quick-wittedness , aptitude
his aptness in illustration was as charming as it was effective — Broadus Mitchell