He could understand pure cussedness, but it did not seem to be that either.

他能理解纯粹的咒骂， 但似乎也不是。

Her sister seemed to her a monster of selfishness, of complaints and of what she could only describe as pure cussedness.

在她看来，她这妹妹是个自私自利的怪物，她经常怨天尤人，同时还有一种怪毛病你简直难以言喻，只好说是地地道道的执拗症了。