==Các từ liên quan==

===Từ đồng nghĩa===

=====noun=====

:[[die-hardism]] , [[grimness]] , [[implacability]] , [[implacableness]] , [[incompliance]] , [[incompliancy]] , [[inexorability]] , [[inexorableness]] , [[inflexibility]] , [[inflexibleness]] , [[intransigence]] , [[intransigency]] , [[obduracy]] , [[relentlessness]] , [[remorselessness]] , [[rigidity]] , [[rigidness]]