Where does “surely” come from?

Surely comes from Middle English surely, formed from Middle English -ly suffix added to Middle French sur, which derives from Latin securus meaning free from care or anxiety.

surely (English): Without fail; Certainly, undoubtedly; With...

Definitions

  1. Without fail; Certainly, undoubtedly; With...

Ancestry of “surely”, step by step

StepLanguageWordMeaning
1Middle Englishsurelysafely; totally, bindingly, without doubt; For...
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-
Every word from Proto-Indo-European h₃ewp-