not so fast

not so fast
idiom
informal
—used in speech to say that one disagrees with what someone has said or to tell someone to stop or slow down
"This proves they're wrong." "Not so fast. There's other evidence to consider."
"The discussion is closed." "Not so fast. I have a few more things to say."

Examples of not so fast in a Sentence
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Ward thankfully said yes, as the crowd of photographers snapped and cheered away—but not so fast.
—Vogue, 21 Apr. 2025
But for those hard-to-hold putting surfaces, the course might be a cinch, but not so fast: Three putts and more await those who don’t wield the wedge and flatstick with utter confidence.
—David Weiss, Forbes, 19 Mar. 2025
Domhnall Gleeson is saying not so fast to any comparisons between The Paper and The Office.
—Dayna Haffenden, People.com, 6 June 2025
But the bill is now in the Senate, and Majority Leader John Thune is saying not so fast.
—Kaitlyn Schallhorn, Oc Register, 5 June 2025
More news: Yankees Make Trade, Send Pitcher to NL Central Club USA Today's Bob Nightengale says not so fast.
—Noah Camras, MSNBC Newsweek, 19 May 2025
Dermatologists say not so fast—in fact, the idea of a base tan might be one of the most common (and dangerous) myths in skin care.
—Laura Schober, Health, 6 May 2025
Some clergy say not so fast The Trump administration rescinded a policy that prohibited immigration agents from making arrests in sensitive areas, such as hospitals, schools and churches.
—Ryan Fonseca, Los Angeles Times, 30 Jan. 2025
This looks like a defensive battle, but not so fast.
—Ralph D. Russo, The Athletic, 22 Dec. 2024