noun

a person with senior managerial responsibility in a business.

account executives

chief,head,principal,senior official,senior manager,senior administrator,director,managing director,MD,CEO,chief executive officer,president,chairman,chairwoman,controller,director general,boss,boss man,top dog,bigwig,big wheel,big Daddy,big Chief,exec,suit,guv’nor,numero uno,Mister Big,(head) honcho,big kahuna,big white chief,sachem,padrone,fat cat