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