What language does Roosevelt use to emphasize the unique circumstances surrounding the speech

He used vivid, emotional words throughout the speech.

President Franklin D. Roosevelt: Yesterday, December 7, 1941-a date which will live in infamy-the United States of America was suddenly and deliberately attacked by naval and air forces of the Empire of Japan. The label "infamy" foreshadows the tone of the entire speech.

The central purpose of this speech was to promote a war against japan. Roosevelt's speech had an immediate and long-lasting impact on American politics. Congress declared war on Japan, with only one Representative, Jeannette Rankin, voting against the declaration.