Where does “unlamentable” come from?
unlamentable (English) comes from English lamentable, from Middle French lamentable, from Latin lāmentābilis, from Latin -bilis, from Proto-Italic -ðlis, from Proto-Indo-European -dʰlis, from Proto-Indo-European -dʰlom — Alternative form of *-trom; instrumental suffix;...
unlamentable (English): Not lamentable
Ancestry of “unlamentable”, step by step