- Certainly; unquestionably:
We'll win for sure.
- To establish something without doubt; make certain:
Make sure he writes it down.
- As one might have expected; certainly.
- Indeed; certainly.
- certain(ly); without doubt
Other Word Forms of Sure
Origin of Sure
From Middle English sure, sur, from Middle French sur, from Old French seür, from Latin sÄ“cÅ«rus (“secure", literally “carefree"), from se (“apart") + cura (“care") (compare Old English orsorg (“carefree"), from or- (“without") + sorg (“care")). See cure. Displaced native Middle English wis, iwis (“certain, sure") (from Old English Ä¡ewis, Ä¡ewiss (“certain, sure")), Middle English siker (“sure, secure") (from Old English sicor (“secure, sure")).
Middle English from Old French safe from Latin sēcūrus secure
From American Heritage Dictionary of the English Language, 5th Edition
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