The phrasal verb "beat up" is predominantly used in informal speech and less frequently found in formal contexts. It generally refers to physically assaulting or attacking someone to inflict injury, as in "He threatened to beat up anyone who disagreed with him." In addition to its literal sense, "beat up" can also be used figuratively or in extended meanings, such as describing a worn-out or damaged object (e.g., "My old car is really beat up"). It may also appear in idiomatic expressions, emphasizing rough treatment, whether physical or metaphorical. "Beat up" is often employed in casual conversations and narratives but is typically avoided in formal writing, where more precise terms would be used to convey similar meanings.
B1
PreIntermediate
1. To physically assault someone, often causing injury.
The gang beat him up after school.
He was beaten up by the muggers, but fortunately he wasn't seriously hurt.
2. To damage or wear out something by rough treatment or heavy use.
The constant use has beaten up that old car.
After so many years, the book was beaten up and missing pages.