ap·ti·tude 
/ˈæptəˌtu:d, Brit ˈæptəˌtju:d/ noun
plural ap·ti·tudes /ˈæptəˌtu:d, Brit ˈæptəˌtju:d/ noun : a natural ability to do something or to learn something [count] ▪ The new test is supposed to measure the aptitudes of the students. ▪ Anyone who can speak five languages obviously has a great natural aptitude for (learning) languages. [noncount] ▪ She's shown great natural aptitude for (learning) languages. ▪ a test of aptitude = an aptitude test [=a test that is designed to show how easily someone will be able to learn certain skills]
