ETYM Old Eng. no, na, as. nâ.
1. Not in any degree or manner; not at all.
2. Referring to the degree to which a certain quality is present; SYN. no more.
3. Used to express refusal or denial or disagreement etc or especially to emphasize a negative statement.

1. Not any
2. Not one; nobody
3. Not any such thing or person
4. No part; nothing