Present, Future ない is [x] なくない is not [x] Past なかった was [x] なくなかった was not [x] Te-form, Continuative なくて is [x] and... なくなくて is not [x] and... Provisional なければ if it is [x] なくなければ if it is not [x] Conditional なかったら when/if it is [x] なくなかったら when/if it is not [x] Adverbial なく [x]-ly Noun form なさ [x]-ness