executive

[1]	chairman (of the board) , executive director , director , managing director , chief executive , president , chief (executive officer) , CEO , manager , head , leader , principal , administrator , official , supervisor , foreman , superintendent , overseer , boss , master , (Colloq) Mr Big , (chief/head) honcho , number one , kingpin , (Slang) top banana , big cheese , numero uno , top dog
[2]	administration , management , directorship , directorate , government , leadership , supervision
[3]	administrator

adj.

[1]	administrative , managerial , supervisory , official , governing , governmental , gubernatorial , regulatory