noun
ADJECTIVE
▪ leading , principal , senior ( esp. AmE )
▪
a leading business ~
▪ business , computer , data , financial , industry , intelligence , investment , legal ( esp. AmE ), market , media , military , policy , political , research ( esp. AmE ), retail , security , systems
▪ CIA , Wall Street , etc.
PREPOSITION
▪ ~ of
▪
He was a shrewd ~ of players' strengths and weaknesses.