After you vs But you first vs Go ahead

When to use each in English, with meaning, register, and examples.

After you

Top 2,000 (common)

But you first

Beyond 10,000 (less common)

Go ahead

Top 2,000 (common)
 After youBut you firstGo ahead
Pronunciation🇬🇧 //ˈɑːftə jʊ//🇺🇸 //ˈæftɚ ju//🇬🇧 //bʌt jʊ fɜːst//🇺🇸 //bʌt jʊ fɜrst//🇬🇧 //ɡəʊ əˈhɛd//🇺🇸 //ɡoʊ əˈhɛd//
MeaningWhen you finish, I will go next.You go before me.to proceed or continue doing something
ExampleYou can go first; it's after you.He opened the door and said, 'But you first.'You can go ahead and start the meeting without me.
RegisterNeutralNeutralNeutral
How commonTop 2,000 (common)Beyond 10,000 (less common)Top 2,000 (common)
Collocationsgo after, after you, pleasesay but you first, use but you first, hear but you firstgo ahead with a plan, go ahead and do something, go ahead and ask
Antonymsbefore you, ahead of you, in front of you-stop, pause, hesitate
Common mistakesUsed too early; should wait for the other person to finish., Mispronunciation in fast speech; ensure clarity., Omitting 'you' and saying just 'after' which sounds incomplete.Using 'but you first' in very formal situations might sound too casual., Some learners misplace the phrase in a sentence when trying to integrate it.Overusing in formal contexts where 'please proceed' is more appropriate., Confusing with 'go on' which implies continuation rather than permission., Not using appropriate pauses in dialogue.
Usage notesUsed to indicate someone can proceed after another person. Suitable in polite conversations but may feel formal in casual contexts.Used in polite conversation to allow someone else to go ahead. Suitable for both formal and informal settings.Used to give permission or encourage someone to start. Usually neutral but can be informal in casual conversations.

See it in real clips

After you
But you first
Go ahead

Frequently asked questions: After you vs But you first vs Go ahead

What's the difference between After you, But you first, and Go ahead?

After you: When you finish, I will go next. But you first: You go before me. Go ahead: to proceed or continue doing something

Can you show an example of each?

After you: You can go first; it's after you. But you first: He opened the door and said, 'But you first.' Go ahead: You can go ahead and start the meeting without me.

Can I use After you, But you first, and Go ahead interchangeably?

Not always. After you, But you first, and Go ahead are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.