Semper I, used to indicate selfishness, self-centered tendencies, a selfish indivudual or group; Adjective semper I, used to describe a person's actions as rugged individualist who disregards other opinions, property and ideas
Semper I is his name. He was the semper I who walked all over her in the office to get the job
As an Adjective:
His was a semper I position, and he could not prevail.
As a semper I he volunteered simply for the glory