Where does “inefable” come from?
inefable (Spanish) comes from Latin ineffābilis, from Latin effabilis, from Latin -bilis, from Proto-Italic -ðlis, from Proto-Indo-European -dʰlis, from Proto-Indo-European -dʰlom — Alternative form of *-trom; instrumental suffix;...
inefable (Spanish): ineffable
Ancestry of “inefable”, step by step