Tell me about it vs Tell me what it is

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

Tell me about it

InformalTop 2,000 (common)

Tell me what it is

Top 2,000 (common)
Most formal: Tell me what it is
 Tell me about itTell me what it is
Pronunciation🇬🇧 //tɛl mi əˈbaʊt ɪt//🇺🇸 //tɛl mi əˈbaʊt ɪt//🇬🇧 //tɛl miː wɒt ɪt ɪz//🇺🇸 //tɛl mi wʌt ɪt ɪz//
MeaningSay more about something.Ask someone to explain something.
ExampleI heard you went on a trip! Tell me about it!When you see that painting, you want to say, 'Tell me what it is.'
RegisterInformalNeutral
How commonTop 2,000 (common)Top 2,000 (common)
Collocationstell me more, tell me everything, tell me their storytell me what it is about, tell me what it is for, tell me what it is then, can you tell me what it is, tell me what it is like
Common mistakesUsing it in formal situations where a more serious response is needed., Confusing it with 'tell me about that,' which is more specific., Omitting context, making the phrase confusing without prior information.Confused with asking for personal opinions instead of information., Omitting the context for clarity when asking., Using a different tense that sounds awkward.
Usage notesUsed in casual conversations to invite someone to elaborate. Not suitable for formal contexts like business meetings.Use this phrase when you want someone to provide information. It's suitable in most situations but may seem informal in very formal contexts.

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Tell me what it is

Frequently asked questions: Tell me about it vs Tell me what it is

What's the difference between Tell me about it and Tell me what it is?

Tell me about it: Say more about something. Tell me what it is: Ask someone to explain something.

Which is more formal: Tell me about it and Tell me what it is?

Tell me what it is is the most formal of these.

Can you show an example of each?

Tell me about it: I heard you went on a trip! Tell me about it! Tell me what it is: When you see that painting, you want to say, 'Tell me what it is.'

Can I use Tell me about it and Tell me what it is interchangeably?

Not always. Tell me about it and Tell me what it is 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.

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