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dead sure

ADVERB

for sure

Synonyms

WEAK

certainly definitely for a fact for certain for real no doubt no question no two ways about it really surely unquestionably

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

But about one thing Clo is dead sure: her place in the world.

From The Wall Street Journal • Dec. 19, 2025

I know for dead sure that’s not so.

From The New Yorker • Dec. 16, 2019

First, none of we economists know anything for dead sure.

From Forbes • Aug. 1, 2014

That's how I planned to end this piece, back when I sat on the bank overlooking the 14th hole on Sunday, dead sure that Jordan Spieth would win the U.S.

From Golf Digest • Oct. 16, 2013

"I'm dead sure he is, in spite of the fact that he doesn't show up," said Tom.

From Rocky Mountain Boys Camping in the Big Game Country by Rathborne, St. George

dead sure

Example Sentences

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