nonadaptable

Etymology tree Proto-Indo-European *né Proto-Germanic *ne Proto-Indo-European *ís? Proto-Indo-European *h₁óynos Proto-Germanic *ainaz Proto-Germanic *nainaz Proto-West Germanic *nain Old English nān Middle English non ▲ Old English nān Old English nān- Middle English non- English non- 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 nonadaptable From non- + adaptable.

来源：wiktionary