Exhort (4)
I believe the answer is:
urge
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">exhort</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for urge that I've seen before include "Persuade - proclivity" , "Compulsion; egg on" , "Impel - impulse" , "Incite to action" , "Advise strongly or prod" .)