Not so fast Meaning in English
expression
Definition
Used to tell someone to slow down, wait, or stop before proceeding, often because something needs to be checked or considered first. It can also be said when someone is acting too quickly or making assumptions.
Usage & Nuances
Informal, often said in conversation to pause someone or correct them. Used both literally (asking someone to slow down) and figuratively (asking to reconsider or not jump to conclusions). Can be mildly humorous or firm depending on tone.
Example Sentences
Not so fast! We need to check your ticket first.
basic
Not so fast. Let's make sure we have everything we need.
basic
Hey, not so fast! That's my bag.
basic
You got the job? Not so fast—did you sign the contract yet?
natural
Not so fast, mister—where do you think you’re going?
natural
Wait, not so fast—what did she actually say?
natural