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