English
provability
From prove + -ability.
A compound of prove + -ability
Proto-Indo-European *pro-bʰuH-s ‘being in front’
…
Latin probō ‘to test; to approve’
Proto-West Germanic *prōbōn
Old English prōfian ‘to esteem; to test, prove’
Middle English proven
English prove
Today it means
noun The condition of being provable
Language periods are conventional ranges, not dates for this word.
Etymograph / provability