Where does “undoubtingly” come from?

undoubtingly (English) comes from English undoubting, from English Un-, from English still, from Old English stillan, from Proto-West Germanic stillijan, from Proto-West Germanic -jan, from Proto-Germanic -janą, from Proto-Indo-European -yéti — he, she.

undoubtingly (English): Without doubting

Definitions

  1. Without doubting

Ancestry of “undoubtingly”, step by step

undoubtingly traces back through two separate lines of ancestry.

via English undoubting

StepLanguageWordMeaning
1EnglishundoubtingExperiencing or harboring no doubts; entirely...
2EnglishUn-not
3EnglishstillNot moving; calm; Not effervescing; not...
4Old Englishstillanbecome calm, abate, subside; calm, pacify,...
5Proto-West Germanicstillijanto make still, quiet
6Proto-West Germanic-janCreates denominative verbs from nouns; Creates...
7Proto-Germanic-janąDerives denominatives from nouns and factitives...
8Proto-Indo-European-yétiCreates intransitive, often deponent,...
9Proto-Indo-Europeanyé-
10Chichewaiyehe, she

via English ly

StepLanguageWordMeaning
1EnglishlyAbbreviation of light-year
2VietnameselyAlternative spelling of li
Every word from Chichewa iyeEvery word from Proto-Germanic -janąEvery word from English Un-
undoubtingly — Etymology, Origin & Word History | Etymology Explorer