You searched for: “aggrandizement”
aggrandizement (s) (noun), aggrandizements (pl)
The increase or enhancement of prestige, power, or influence of someone: The president of the company used fancy letterheads on his memos, etc. to emphasize the aggrandizement of his new position.
("The Emperor's New Clothes" by Hans Christian Andersen is a fable about the pitfalls of political self-aggrandizement and the fear of people to face reality even when they know that the reality of the situation is untrue)