Where does “unsure” come from?

Unsure comes from English sure, which derives from Latin securus meaning "free from care," ultimately from Proto-Indo-European óynos and ano-.

unsure (English): uncertain; unstable or precarious

Definitions

  1. uncertain; unstable or precarious

Ancestry of “unsure”, step by step

StepLanguageWordMeaning
1EnglishsurePhysically secure and certain, non-failing,...
2Middle Englishsuresafe, protected; fortified, well-defended,...
3Middle Frenchsur
4Old FrenchseürAlternative form of seur; sure
5Latinsuper"accusative" above, on the top of, upon;...
6Latineks-uper
7Proto-Indo-Europeanupérialternative reconstruction of *upér
8Proto-Indo-Europeanupérabove; over
9Proto-Indo-Europeanupóunder, below
10Proto-Indo-Europeanh₃ewp-

Words derived from “unsure

Every word from Proto-Indo-European h₃ewp-
unsure — Etymology, Origin & Word History | Etymology Explorer