English
inconvertible
From in- + convertible.
Formed from in- + convertible
Proto-Indo-European *wert- ‘to turn, to rotate, spin’
…
Latin vertō ‘to turn’
Latin convertere ‘to turn back, to turn over, to turn around,…’
Late Latin convertibilis ‘interchangeable’
Old French convertible
English convertible
Today it means
adj Not convertible
Language periods are conventional ranges, not dates for this word.
Etymograph / inconvertible