Pronunciation: (apt),[key] —adj. 1. inclined; disposed; given; prone: too apt to slander others. 2. likely: Am I apt to find him at home? 3. unusually intelligent; able to learn quickly and easily: an apt pupil. 4. suited to the purpose or occasion; appropriate: an apt metaphor; a few apt remarks on world peace. 5. Archaic.prepared; ready; willing.