English phrase from drama scenes

What Does "you don't know what you're talking about" Mean?

Learn what "you don't know what you're talking about" means, when people say it, and how to use it naturally in English.

Beginner
Rude
Firm
Confront

You don't know what you're talking about.

This means the speaker thinks the other person is wrong and not informed enough to speak confidently.

From Faded Threads, Episode 4

When do people say this?

Scene Context

The speaker dismisses the other person's opinion as uninformed during a confrontation.

Usage Scenario

Use it in arguments when you want to sharply reject someone's opinion. It is rude and can escalate conflict quickly.

Better ways to say it

1
You don't know what you're talking about.
2
You have no idea what you're talking about.
3
You don't know what you're saying.

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English Comeback Phrases