Is it correct to say: I know sufficient about the subject, or would it be correct to say I know enough about the subject? I heard people use the first version, but however, I am not a native speaker, to me is is sound somehow unnatural

  • "I know sufficient about the subject" sounds very awkward to these American ears. I'm not sure if it's grammatical or not, but if I had to choose, I'd say not.
    – Ringo
    Commented Oct 19, 2017 at 16:24

1 Answer 1


I wouldn't say this use of "sufficient" is incorrect. It does also sound wrong to my American ears, but I have heard it used by some British English speakers. I would say "I know enough".

If I wanted to use "sufficient" in this context, it would have to be related to some attribute:

My knowledge of the language is sufficient (for me to get around comfortably in that country)

I am sufficiently fluent in the language (that I can get around comfortably in that country).

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