|Origin:||, past participle of apere 'to fasten'|
to have a natural tendency to do something:
Some of the staff are apt to arrive late on Mondays.
exactly right for a particular situation or purpose [= appropriate]:
'Love at first sight' is a very apt description of how he felt when he saw her.
The punishment should be apt for the crime.
a student who is quick to learn and understand
—aptness noun [uncountable]