aptitude
noun [ C or U ]
uk/ˈæptɪtjuːd/ us/ˈæptɪtuːd/a natural ability or skill:
aptitude for sth Discovering that he had an aptitude for finance, he got a job as a commercial-credit analyst.
display/have/show an aptitude He has been studying for A-levels and has shown an aptitude for computer studies, art, and design.