aptitude implies a natural liking for some activity and the likelihood of success in it.

APTITUDE definition: capability; ability; innate or acquired capacity for something; talent. See examples of aptitude used in a sentence.

Definition of aptitude noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

(Definition of aptitude from the Cambridge Academic Content Dictionary © Cambridge University Press)

Aptitude is inborn potential to perform certain kinds of activities, whether physical or mental, and whether developed or undeveloped. Aptitude is often contrasted with skills and abilities, which are developed …

ap•ti•tude /ˈæptɪˌtud, -ˌtyud/ n. innate ability or skill; talent: [countable] an aptitude for mathematics. [uncountable] musical aptitude. See -apt-.

aptitude, n. meanings, etymology, pronunciation and more in the Oxford English Dictionary

1. An inherent ability, as for learning; a talent: an aptitude for mathematics. 2. Archaic The condition or quality of being suitable; appropriateness.

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]

Someone's aptitude for a particular kind of work or activity is their ability to learn it quickly and to do it well.