Hundreds of airliners cross the Atlantic every day with the sureness of shuttle bus.
Its sureness and clearness are excellent, and its portraiture clear and pleasing.
Then thou, Caius Nepos, art not certain of the sureness of thy hand?
sureness, ease, freedom, and the effect of personal reminiscence come only from complete mastery.
When she plays Chopin, she interprets his sureness and neatness.
Her sureness chilled his impatient hurry; and the oft-told tragedies of prairie snowstorms recurred to him.
But it was all over now; his enthusiasm and sureness had fled.
Her eyes were clear and unafraid now, and in the poise of her head and body was a sureness of purpose that staggered him.
It brings a man to a place of sureness as to his religious relationships.
But the real secret of his success was not luck but his sureness of himself.
c.1300, "safe, secure," later "mentally certain" (mid-15c.), from Old French sur, seur "safe, secure," from Latin securus "free from care, untroubled, heedless, safe" (see secure (adj.)). Pronunciation development followed that of sugar. As an affirmative meaning "yes, certainly" it dates from 1803, from Middle English meanings "firmly established; having no doubt," and phrases like to be sure (1650s), sure enough (1540s), and for sure (1580s). The use as a qualifier meaning "assuredly" goes back to early 15c. Sure-footed is from 1630s; sure thing dates from 1836. In 16c.-17c., Suresby was an appellation for a person to be depended upon.
Yes; certainly: Sure, I'll support you (1842+)