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