English
executability
From execute + -ability.
A compound of execute + -ability
Proto-Indo-European *sekʷ- ‘to follow’
…
Proto-Italic *sekʷōr ‘to follow, come/go after’
Latin sequor ‘to follow’
Latin exsecutus ‘having executed, accomplished’
Old French executer
English execute
Today it means
noun The extent to which something may be executed.
Language periods are conventional ranges, not dates for this word.
Etymograph / executability