Why did she do that? vs Why'd she do that?

Both "Why did she do that?" and "Why'd she do that?" are correct, but the second one is more informal and conversational. The contraction "Why'd" is commonly used in spoken English, while the full form "Why did" is more formal.

Last updated: March 15, 2024

Why did she do that?

This phrase is correct and commonly used in English.

This is the full form of the question asking for the reason behind someone's action. It is suitable for both spoken and written English.

Show examples from the web [+]

I didn't say that I've never had a WHY DID SHE DO THAT moment. I'm sure I have . I just don't recall at the moment. I'm just saying that we all need to be more ...
Apr 10, 2015 ... Why did she do that?? So I have been talking and texing with this girl and sometimes we flirt in our conversations. But when we flirted, we ...
Issues Ment Health Nurs. 1999 Jul-Aug;20(4):387-404. Why did she do that? Issues of moral conflict in battered women's decision making. Belknap RA(1).
[M] [T] Why do you lie? [M] [T] Nobody knows why. [M] [T] Why did you quit? [M] [T] Why are you crying? [M] [T] Why did he run away? [M] [T] Why did she do that?

Alternatives:

Why did she do that?
What made her do that?
What was the reason for her doing that?
What caused her to do that?
What motivated her to do that?

Why'd she do that?

This phrase is correct but more informal and conversational.

This is a contraction of "Why did she do that?" and is commonly used in spoken English. It is suitable for informal conversations.

Show examples from the web [+]

Oct 14, 2013 ... Why'd She Do That? Explaining Workplace Behavior and Why It Matters. About the author. Leisha DeHart-Davis. Associate professor of public ...
George: Well why'd she do that? Kramer: I guess she was hot. George: You mean she just laid there topless? Kramer: No, no, she got up, walked around.
Why'd she do that? She just wanted to and it felt good; he loved it, too. He tells her the G stands for Gale and that he loves her. Mik's not sure how to feel about ...
Mar 26, 2015 ... Why'd she do that to herself, I wonder. I wonder if it's a form of self-expression or if it's an expression of her faith; of letting go and giving her ...

Alternatives:

Why did she do that?
What made her do that?
What was the reason for her doing that?
What caused her to do that?
What motivated her to do that?

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Why did she do that? vs Why'd she do that?