Where does “untolerably” come from?

untolerably (English) comes from English untolerable, from English tolerable, from Middle English tolerable, from Middle French tolerable, from Latin tolerabilis, from Latin -bilis, from Proto-Italic -ðlis, from Proto-Indo-European -dʰlis — Alternative form of *-trom; instrumental suffix;...

Ancestry of “untolerably”, step by step

untolerably traces back through two separate lines of ancestry.

via English untolerable

StepLanguageWordMeaning
1EnglishuntolerableObsolete form of intolerable
2EnglishtolerableCapable of being borne, tolerated or endured;...
3Middle Englishtolerable
4Middle Frenchtolerable
5Latintolerabilisbearable, supportable, endurable, passable,...
6Latin-bilis-ble
7Proto-Italic-ðlisForms adjectives from verb stems indicating capacity or worth of being acted on
8Proto-Indo-European-dʰlis
9Proto-Indo-European-dʰlomAlternative form of *-trom; instrumental suffix;...

via English ly

StepLanguageWordMeaning
1EnglishlyAbbreviation of light-year
2VietnameselyAlternative spelling of li
Every word from Proto-Indo-European -dʰlomEvery word from Latin -bilisEvery word from Latin tolerabilis