NO GOOD or NOT GOOD

[chanbr]

Suppose I washed two dishes. When my mom checked them, she said, "This one is OK, but the other one is no good."

Is NO GOOD used correctly here?

[5jj]

One wouldn't normally worry about a parent's adherence to abstract rules of grammar in situations like this - if you could find any that were relevant. It's fine.

[BobK]

I think 'Not good' probably started life as a hypercorrect form of 'No good' - perhaps among Spanish speakers (underlining the equivalence 'not (Eng)=no (Sp)'). But 'not good' was always possible in some contexts - where it meant 'the opposite of good' rather than just 'bad' - and is now acceptable in many more.)

b

[birdeen's call]

Chanbr, I think you're looking for this: no good - Idioms - by the Free Dictionary, Thesaurus and Encyclopedia.

"Let's see if this soup is any good."
Tastes soup.
"Nah, it's no good."