Rubbing (8)
I believe the answer is:
friction
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">rubbing</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for friction that I've seen before include "Chafing -- disharmony" , "Retarding factor - discord" , "State of conflict, clash" , "animosity" , "Disagreement" .)