inadaptable

Etymology tree Proto-Indo-European *né Proto-Indo-European *n̥- Proto-Italic *ən- Latin in-bor. Middle English in- English in- 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 *-dʰlis Proto-Italic *-ðlis Latin -bilis Latin -ābilis Old French -ablebor. Middle English -able English -able English adaptable English inadaptable From in- + adaptable.

来源：wiktionary