Here are some examples:
* She walked briskly down the street. (She walked quickly and energetically)
* He answered the phone briskly. (He answered the phone quickly and efficiently)
* The economy is growing briskly. (The economy is growing quickly and strongly)
Synonyms:
* Quickly
* Rapidly
* Energetically
* Lively
* Spryly
Antonyms:
* Slowly
* Lazily
* Lethargically
* Drowsily