That is messed up vs That's crazy vs That's not right

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

That is messed up

InformalTop 3,000 (common)

That's crazy

InformalTop 2,000 (common)

That's not right

Top 3,000 (common)
Most formal: That's not rightMost common: That's crazy
 That is messed upThat's crazyThat's not right
Pronunciation🇬🇧 //ðæt ɪz mɛst ʌp//🇺🇸 //ðæt ɪz mɛst ʌp//🇬🇧 //ðæts ˈkreɪzi//🇺🇸 //ðæts ˈkreɪzi//🇬🇧 //ðæts nɒt raɪt//🇺🇸 //ðæts nɑt raɪt//
MeaningThat is not right or fairThat's unbelievable or surprising.That is incorrect or unfair.
ExampleI can't believe they canceled the concert. That is messed up.Did she really win the lottery? That's crazy!When he claimed the project was successful, I thought to myself, 'That's not right.'
RegisterInformalInformalNeutral
How commonTop 3,000 (common)Top 2,000 (common)Top 3,000 (common)
Collocationsreally messed up, that's so messed up, completely messed up, it’s messed up, this is messed upthat's insane, you can't be serious, seriously, that's crazythat's not right at all, that's not right to say, that's not right for you, that's not right in this situation
Common mistakesMisusing in formal contexts where a more polite phrase is needed., Confusing with 'that's messed', which is incomplete., Using without context; it should follow a statement.Used in formal contexts where it's inappropriate., Confused with 'that's insane' — similar, but can imply more seriousness.Using in a formal report or presentation where a softer expression is better., Misusing it in a context where clarification is needed instead of just saying it's wrong.
Usage notesUse this phrase to express disapproval or disbelief. It’s informal, often used in casual conversation among friends.Used in casual conversations to express disbelief or surprise, typically among friends. Avoid in formal settings or professional communication.Use this phrase to indicate disagreement or to highlight a mistake. It's neutral and suitable in most contexts. Avoid in overly formal situations.

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That is messed up
That's crazy
That's not right

Frequently asked questions: That is messed up vs That's crazy vs That's not right

What's the difference between That is messed up, That's crazy, and That's not right?

That is messed up: That is not right or fair That's crazy: That's unbelievable or surprising. That's not right: That is incorrect or unfair.

Which is more formal: That is messed up, That's crazy, and That's not right?

That's not right is the most formal of these.

Which is more common: That is messed up, That's crazy, and That's not right?

That's crazy is the most common in everyday English.

Can you show an example of each?

That is messed up: I can't believe they canceled the concert. That is messed up. That's crazy: Did she really win the lottery? That's crazy! That's not right: When he claimed the project was successful, I thought to myself, 'That's not right.'

Can I use That is messed up, That's crazy, and That's not right interchangeably?

Not always. That is messed up, That's crazy, and That's not right 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.