Emphasizing speed:
* Fast learner: A straightforward and common synonym.
* Rapid learner: Similar to "fast learner," but perhaps implying even greater speed.
* Apt pupil/student: More formal, suggesting a natural aptitude for learning.
* Sharp: Implies intelligence and quick understanding.
* Bright: Similar to "sharp," suggesting intelligence and quick comprehension.
Emphasizing aptitude/ability:
* Highly capable: Focuses on overall ability rather than just speed.
* Proficient: Suggests a high level of skill attained quickly.
* Gifted: Implies exceptional natural talent.
* Talented: Similar to "gifted," but slightly less extreme.
* Adaptable: Highlights the ability to quickly adjust to new situations and information.
Emphasizing understanding:
* Highly perceptive: Emphasizes the ability to grasp concepts quickly.
* Insightful: Suggests a deep understanding gained rapidly.
* Intuitive: Implies an innate understanding without explicit instruction.
When choosing an alternative, consider what aspect of "quick learner" you want to highlight. For example, if you're describing someone who picks up new software quickly, "fast learner" or "adaptable" might be suitable. If you're describing someone with a natural talent for mathematics, "gifted" or "apt student" might be better choices.