In some languages, a negative word like nobody, nothing or never has to be used with a negative verb. In English, these words are themselves enough to give a negative meaning, and not is not necessary.
- I opened the door, but I could see nobody. (NOT I opened the door, but I couldn’t see nobody.)
- You never understand me. (NOT You don’t never understand me.)
- Nothing worries him. (NOT Nothing doesn’t worry him.)
Nobody or not anybody
The words nobody, nothing, never etc are very emphatic. Instead we often use not anybody, not anything, not ever etc. Note that anybody, anything, ever etc are not themselves negative words – they have to be used with not to give a negative meaning.
- I didn’t see anybody. OR I saw nobody. (NOT I saw anybody.)
- I can’t tell you anything. OR I can tell you nothing. (NOT I can tell you anything.)
Not anybody, not anything etc., cannot be used at the beginning of a clause. Instead we use nobody, nothing etc.
- Nobody is perfect. (NOT Not anybody is perfect.)
- Nothing matters. (NOT Not anything matters.)
- Nowhere is safe. (NOT Not anywhere is safe.)
In many British, American and other dialects, two or more negatives can be used with a single negative meaning.
I didn’t see nobody. (= I didn’t see anybody.)
Note that a double negative is not equivalent to a positive. The sentence ‘He didn’t say nothing’ does not mean that ‘He said something’. It is simply a non-standard but understandable way of saying ‘He didn’t say anything’.