Meaning of buff up | Babel Free

Definitions

1. To improve.
   idiomatic, transitive
2. To shine; to make shiny.
   transitive
3. To become more muscular.
   idiomatic, intransitive
4. To study hard to learn a particular subject.
   idiomatic, intransitive

Examples

“[…] Mr. Kurz was quickly seen in Europe as the poster boy of an ascendant right for a new generation, a political Wunderkind who had salvaged conservatism by borrowing the far right’s agenda, buffing it up and bringing it into the mainstream.”

“I'll need to buff up on my Italian before my trip to Genoa.”

CEFR level