"TGIM" is a popular acronym that stands for "Thank God It's Monday." This phrase is often used to express one's enthusiasm for the start of a new week. However, there are many synonyms for this phrase that can be used to convey the same sentiment. Some of the popular alternatives include "Motivation Monday," "Marvelous Monday," and "Monday Funday." Other popular options include "Manic Monday," "Mindful Monday," and "Mighty Monday." Regardless of which phrase you use, the goal is to express your excitement for the opportunities that the new week will bring. So, whether you're a Monday hater or lover, there's a synonym out there that's perfect for you.