English Etymology Etymology treeEnglish combineProto-Indo-European *-tḗrProto-Indo-European *-dʰlomProto-Indo-European *-dʰlisProto-Italic *-ðlisLatin -bilisLatin -ābilisProto-Indo-European *-teh₂Proto-Indo-European *-tsProto-Indo-European *-teh₂tsProto-Italic *-tātsLatin -tāsLatin -abilitasMiddle French -abletébor.Middle English -ableteEnglish -abilityEnglish combinabilityFrom combine + -ability. Noun combinability (uncountable) The quality or state of being combinable. Antonyms uncombinability divisibility separability