The phrasal verb "throw up" is predominantly used in informal speech, primarily to describe the act of vomiting. It is a common colloquial term that is used in everyday conversations and casual contexts, often in spoken language rather than in formal or written contexts. While it can occasionally be found in more serious settings, such as medical discussions or emergency situations, it's usually substituted by more formal terms like "vomit" or "regurgitate" in professional or academic writing. Beyond its primary meaning related to expelling the contents of the stomach, it can also be used metaphorically to describe generating something quickly, as in "throw up a website," or as a way to suggest raising issues or obstacles. This use still leans toward informal settings, reinforcing the term's overall casual nature.
B1
PreIntermediate
1. To vomit or regurgitate foods from the stomach through the mouth.
He felt so sick after eating too much that he had to run to the bathroom and throw up.
The baby ate too fast and ended up throwing up all over her bib.
2. To produce something abruptly or as a result of a sudden or unexpected action.
The bad weather threw up several logistical challenges for the event organizers.
Her research threw up some interesting findings that no one expected.