English word sure comes from Proto-Indo-European *súHros (Sour, acidic, salty.), Latin sambuca, Latin se- (Separately, astray. Without.), Latin curam, Proto-Indo-European *sūr-, Proto-Indo-European *sūro-, Proto-Indo-European *suH-ro-, Latin super
| Dictionary entry | Language | Definition |
|---|---|---|
| *súHros | Proto-Indo-European (ine) | Sour, acidic, salty. |
| sambuca | Latin (lat) | (musical instruments) A triangular harp having a very sharp, shrill tone. |
| se- | Latin (lat) | Separately, astray. Without. |
| curam | Latin (lat) | |
| *sūr- | Proto-Indo-European (ine) | sour (milk) |
| *sūro- | Proto-Indo-European (ine) | sour, salty, bitter |
| *suH-ro- | Proto-Indo-European (ine) | |
| super | Latin (lat) | Accusative [of measure] above, beyond, over, in addition to. Accusative [of place] above, beyond. Accusative [of place] above, on the top of, upon. |
| sambucus | Latin (lat) | Elder tree, elderberry. |
| securus | Latin (lat) | Careless, negligent. Fearless. Quiet, composed, serene. Unconcerned, untroubled, carefree. |
| *sūraz | Proto-Germanic (gem-pro) | Sour, acidic. |
| *sūr | Frankish (frk) | Acidic, sour. |
| seür | Old French (fro) | |
| sur | Old French (fro) | Sour, biter. |
| sur | Middle French (frm) | |
| sure | Middle English (enm) | |
| sure | English (en) | Yes. (Expresses noncommittal agreement or consent.). Yes; of course. (obsolete) Betrothed; engaged to marry.. (obsolete) Free from danger; safe; secure.. Certain in one's knowledge or belief.. Certain to act or be a specified way.. Physically secure and certain, non-failing, reliable. (modal adverb) Without doubt, certainly. |