aptitude/ˈæptɪˌtjuːd/EtymologyFrom Middle French aptitude, from Medieval Latin aptitudo, from Latin aptus (“apt, fit”). By surface analysis, apt + -itude. Doublet of attitude.aptitude means A natural ability to acquire knowledge or skill. Lexicurio rates it Distinctive — a strength score of 65 out of 100.nounA natural ability to acquire knowledge or skill.“She showed an early aptitude for mathematics.”The condition of being suitable.