noun
zip
ZIP/zɪp/
Liveliness or energetic force.
The man's springy dance leap displays plenty of zip.

Etymology
Zip imitates the sound of something passing rapidly through the air, such as a bullet. That suggestion of swift motion extended to energy and liveliness.
More examples
- Her playful humor adds zip to the conversation.
- The team's performance lacks its usual zip.
- Try shorter sentences to give your writing more zip.
Forms
zippy adjective — Full of lively energy or spirit.