Comprehensive resource for understanding and mastering English idioms
The idiom "on top of the world" means feeling extremely happy, joyful, or successful. It can also mean being completely overwhelmed or overjoyed by something. The expression is often used to describe a moment of great excitement or achievement, such as winning a race, getting a promotion at work, or finding out that one's dream has come true.
The exact origin of the idiom "on top of the world" is unknown, but it has been in use since at least the early 20th century. One theory suggests that the phrase comes from the idea of being so high up that one feels on top of the world. Another theory suggests that it comes from the feeling of triumph and elation that comes with achieving a goal or accomplishment. The idiom has remained relatively stable in meaning over time, but its usage may vary depending on the context or situation.