unadaptable

Etymology tree Proto-Indo-European *né Proto-Indo-European *n̥- Proto-Germanic *un- Proto-West Germanic *un- Old English un- Middle English un- English un- Proto-Indo-European *h₂éd Proto-Italic *ad Proto-Italic *ad- Latin ad- Proto-Italic *aptos Latin aptus Proto-Indo-European *-h₂ Proto-Indo-European *-éh₂ Proto-Indo-European *-yéti Proto-Indo-European *-eh₂yéti Proto-Italic *-āō Latin -ō Latin apiō ▲ Latin -ō Latin -tō Latin aptō Latin adaptōder. Middle English *adapten English adapt Proto-Indo-European *-tḗr Proto-Indo-European *-dʰlom Proto-Indo-European *-dʰlis Proto-Italic *-ðlis Latin -bilis Latin -ābilis Old French -ablebor. Middle English -able English -able English adaptable English unadaptable From un- + adaptable.

1. 01
   derived from adaptāre
2. 02
   inherited from *adapten✻
3. 03
   suffixed as adaptable — “adapt + able”
4. 04
   prefixed as unadaptable — “un + adaptable”