Ability

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late Middle English: from Old French ablete, from Latin habilitas, from habilis ‘able’.

wiktionary

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First attested in the 1300s. From Middle English abilite(“suitability, aptitude, ability”), from Middle French habilité, from Old French ableté, from Latin habilitās(“aptness, ability”), from habilis(“apt, fit, skillful, able”), equivalent to able +‎ -ity.

etymonline

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ability (n.)

late 14c., "state or condition of being able; capacity to do or act," from Old French ableté "ability (to inherit)," from Latin habilitatem (nominative habilitas, in Medieval Latin abilitas) "aptitude, ability," 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. Also in Middle English, "suitableness, fitness." Abilities "one's talents or mental endowments" is from 1580s.