ability (n.)youdaoicibaDictYouDict[ability 词源字典]
late 14c., from Old French ableté "expert at handling (something)," from Latin habilitatem (nominative habilitas) "aptitude," noun of quality from habilis "easy to manage, handy" (see able). One case where a Latin silent -h- failed to make a return in English (despite efforts of 16c.-17c. scholars); see H.[ability etymology, ability origin, 英语词源]