From Middle English -ablete, -iblete, -abilite, -ibilite, from Middle French -ableté, -ibleté, -abilité, -ibilité, from Latin -abilitas, -ibilitas, from -abilis (“able”) or -ibilis (“able”) + -tas. Equivalent to -able + -ity. Not etymologically related to ability.
- Forms a noun from a verb; ability, inclination or suitability for a specified function or condition.
- Most words ending in "ability" formed in English are first attested after corresponding words ending in -able.
- Note that this is not simply -able + -ity: in English it is a parallel formation, not a compound suffix: there is a sound and spelling change. Compare -ably (compound suffix) and -ification (parallel suffix).
- Some words ending in -ability are alterations of words of French origin ending in -abilité or Latin words ending in -abilitās.
- absorbability, from absorbable
- acceptability, from acceptable
- accountability, from accountable
- adaptability, from adaptable
- affability, from affable
- availability, from available
- capability, from capable
- culpability, from culpable
- desirability, from desirable