That boy is no good for you vs That boy is not good for you

Both phrases are correct and commonly used in English. They convey the same meaning, but 'no good' is more informal and colloquial, while 'not good' is more neutral and formal.

Last updated: March 20, 2024 • 563 views

That boy is no good for you

This phrase is correct and commonly used in informal contexts.

This phrase is informal and colloquial, often used in spoken English to express that someone is not a suitable or beneficial choice.

Examples:

That boy is no good for you. He's always causing trouble.
I can see that he's no good for you. You deserve better.
She knows that boy is no good for her, but she can't help being attracted to him.

Show examples from the web [+]

3. More. Copy link to Tweet; Embed Tweet. Katherine Yang Retweeted. Mae @ MaeMuldez Jan 29. That boy is no good for you. You're way too good for him.
Oct 24, 2015 ... “That boy is no good for you. I agree with your father. You can see him at school only, and don't let us find out that you ever skip with him ...
This opening proclamation would be good fodder for a discussion on a typical parental warning, "That boy is no good for you. I'm telling you, that boy is no good ...
Jun 20, 2011 ... Giselle refuses to listen to her mother (played by the ever-popular Chalnessa Eames) when she tells her, "Honey, that boy is no good for you!

Alternatives:

that boy is not good for you
that boy is unsuitable for you
that boy is not beneficial for you
that boy is bad for you
that boy is harmful to you

That boy is not good for you

This phrase is correct and commonly used in neutral or formal contexts.

This phrase is more neutral and formal compared to 'no good'. It is suitable for written or spoken English when a more formal tone is required.

Examples:

It's clear that boy is not good for you. You should stay away from him.
She believes that boy is not good for you, and she's looking out for your best interests.
The teacher warned her that boy is not good for her academic performance.

Alternatives:

that boy is no good for you
that boy is unsuitable for you
that boy is not beneficial for you
that boy is bad for you
that boy is harmful to you

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That boy is no good for you vs That boy is not good for you