Where does “unsleepingly” come from?

unsleepingly (English) comes from English unsleeping, 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.

unsleepingly (English): Without sleeping; vigilantly

Definitions

  1. Without sleeping; vigilantly

Ancestry of “unsleepingly”, step by step

unsleepingly traces back through two separate lines of ancestry.

via English unsleeping

StepLanguageWordMeaning
1EnglishunsleepingNot sleeping; Remaining constantly alert;...
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 iye