Apt is defined as a response or result that is likely, expected or anticipated.(adjective)
An example of something that is apt to be addictive is cigarette smoking.
The definition of apt is something a person might have a tendency to do.(adjective)
An example of someone who is apt to lie is a politician.
Apt means someone who is extraordinarily smart or is quick to learn or understand.(adjective)
An example of someone who is apt is an insightful student.
See apt in Webster's New World College Dictionary
Origin: ME & OFr apte < L aptus, pp. of apere < IE base *ap-, to grasp, reach > Gr haptein, to fasten
See apt in American Heritage Dictionary 4
Origin: Middle English
Origin: , from Old French apte
Origin: , from Latin aptus
Origin: , past participle of apere, to fasten.
Origin: A(utomatically) P(rogrammed) T(ool).
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