Where does “decayability” come from?

decayability (English) comes from English ability, from Middle English abilite, from Old French ableté, from Latin habilitās, from Latin habilis, from Latin -ilis, from Proto-Italic -elis, from Proto-Indo-European -elis — Forms agent nouns from verbal roots.

decayability (English): Ability to decay

Definitions

  1. Ability to decay

Ancestry of “decayability”, step by step

decayability traces back through two separate lines of ancestry.

via English ability

StepLanguageWordMeaning
1EnglishabilitySuitableness; The quality or state of being able;...
2Middle Englishabilitesuitability, aptitude, ability
3Old Frenchableté
4Latinhabilitāsability, aptitude, fitness
5Latinhabilisable to have/possess/maintain; having sufficient...
6Latin-ilis-ile
7Proto-Italic-elis
8Proto-Indo-European-elis
9Proto-Indo-European-lósForms agent nouns from verbal roots

via English decay

StepLanguageWordMeaning
1EnglishdecayThe process or result of being gradually...
2Middle Englishdecayen
3Anglo-Normandecaeirto fall away, decay, decline
4Medieval Latindecadere
5LatindecidoI fall down or off; collapse; drop, hang down; I...
6LatincadoI fall, I fall out; I die; I cease
7Proto-Italickadōfall, sink
8Proto-Indo-Europeanḱad-to fall
Every word from Proto-Indo-European -lós