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Definitions

for sure

ADVERB
definitely
Synonyms
WEAK
certainly dead sure 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.

“Kontinental ’25” is about the heavy stuff, for sure.

From Los Angeles Times • Apr. 3, 2026

We must play the odds, but we can’t know for sure what will happen.

From The Wall Street Journal • Mar. 31, 2026

"We have only seen a few tidal disruption events of this type, so we don't know for sure how they're supposed to evolve," Sears said.

From Science Daily • Mar. 30, 2026

While the number of terminals within Iran is not publicly known, Ahmadian estimates that "there are more than 50,000 Starlink terminals in Iran, for sure."

From Barron's • Mar. 26, 2026

Sam knew that for sure, because once he had dumped Frank out, and Anastasia had screamed and grabbed Frank and filled the bowl with water again even before she mopped up the floor.

From "All About Sam" by Lois Lowry

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.