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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
*súHros (Proto-Indo-European)
Sour, acidic, salty.
sambuca (Latin)
(musical instruments) A triangular harp having a very sharp, shrill tone.
se- (Latin)
Separately, astray. Without.
curam (Latin)
*sūr- (Proto-Indo-European)
sour (milk)
*sūro- (Proto-Indo-European)
sour, salty, bitter
*suH-ro- (Proto-Indo-European)
super (Latin)
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)
Elder tree, elderberry.
securus (Latin)
Careless, negligent. Fearless. Quiet, composed, serene. Unconcerned, untroubled, carefree.
*sūraz (Proto-Germanic)
Sour, acidic.
*sūr (Frankish)
Acidic, sour.
seür (Old French)
sur (Old French)
Sour, biter.
sur (Middle French)
sure (Middle English)
sure (English)
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.