Definition of "important person" [important person]
A person whose actions and opinions strongly influence the course of events(noun)
WordNet. Princeton University. 2010.
Use "important person" in a sentence
"Cloonan briefed the two agents that Libi was an important person because of his position as “amir,” or commander, of the Khaldan camp, and someone they should be looking to get as much cooperation from as possible, as they would from any other suspect in any other case."
"Hearing that meant the world to me; Lord knows, I tried to make everyone from the Legends busboys and servers to Yankee ownership feel like the most important person in the world."
"He grew more and more irritated with her; he was the most important person in the world and was engaged in proving it to Marjorie Jones and the whole city, and yet Miss Spence seemed to feel she still had the right to order him about as she did in the old days when he was an ordinary schoolboy."