A Monday morning quarterback is someone who critiques or analyzes an event after it has already occurred, often with the benefit of hindsight. Synonyms for this phrase include armchair expert, backseat driver, hindsight critic, armchair quarterback, and sideline critic. These terms are often used to describe individuals who are not actively involved in a situation, yet offer their opinions and critiques based on limited information. While these terms may have a negative connotation, it is important to consider the value that these individuals may bring in terms of constructive criticism and different perspectives.