Effectibility is a synonym of doability.
As nouns the difference between doability and effectibility
is that doability is feasibility; practicability while effectibility is capability of being done or achieved.
doability
English
Noun
(doabilities)
Feasibility; practicability.
effectibility
English
Noun
(-)
Capability of being done or achieved.
Synonyms
*(capability of being done) doability, practicability, feasibility