な

い

adjective

1. nonexistent, not being (there). Usually written with kana alone.
2. unowned, not had, unpossessed.
3. unique.
4. not, impossible, won't happen. As ...ことがない, etc.; indicates negation, inexperience, unnecessariness or impossibility.

auxiliary adjective

1. not. After the ren'youkei form of an adjective.
2. to not be, to have not. After the -te form of a verb.