Definition & Meaning of "quick on the uptake"in English

What does "quick on the uptake" mean in intelligence slang?

The phrase "quick on the uptake" means being able to understand or learn things quickly. The structure is an idiomatic expression where "uptake" refers to grasping or absorbing information, and "quick" indicates speed. It is commonly used in everyday speech to describe someone who processes information fast and understands instructions or ideas without needing much explanation.