important person, n.
a person whose actions and opinions strongly influence the course of events
<noun.person>
important person influential person personage
semantic pointers
hypernym
hyponym
big shot, big gun, big wheel, big cheese, big deal, big enchilada, big fish, head honcho
celebrity, famous person
giant, colossus, behemoth, heavyweight, titan
elder statesman
eminence grise
Excellency
fixer, influence peddler
heavy hitter
hierarch
high-muck-a-muck, pooh-bah
kingmaker
kingpin, top banana, bigwig
magnifico
figure, name, public figure
nepotist
policy maker
power broker, powerbroker
sacred cow
sirdar
socialite
sun
dignitary, very important person, VIP, high-up, panjandrum, high muckamuck
worthy