1. very appropriate: especially suited to the circumstances an apt comment
2. likely: often doing something and likely to do it again apt to get angry
3. quick to learn: enthusiastic and quick to learn new things an apt pupil
[14th century. Directly or via Old French< Latin aptus, past participle of apere "fit, fasten, join"]
apt·ly adverb
apt·ness noun
Word History
The Latin word apere "to fit, fasten," from which apt is derived, is also the source of English adapt, attitude, and inept. Its Indo-European ancestor is in turn the source of English copulate and couple.
