- to make (something) faster
- She quickened [=hastened] her steps.
- We quickened the pace. [=we started to walk faster]
- Stimulants can quicken the heart rate.
- His pulse quickened at the thought of seeing her again.
- a quickening tempo
- The approach of the deadline quickened our sense of urgency.
- to become stronger or more active
- The drama quickened when police arrived at the scene.