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