exert exert /ɪgˈzɝːt/

verb

1. () Put to use  ( exert , exercise )
   put to use
    Exert one's power or influence
   exert one's power or influence
   
2. () Have and exercise  ( wield , maintain , exert )
   have and exercise
    Wield power and authority
   wield power and authority
   
3. () Make a great effort at a mental or physical task  ( exert )
   make a great effort at a mental or physical task
    Exert oneself
   exert oneself