Here are some synonyms for "deftly":
* Skillfully
* Cleverly
* Adroitly
* Dexterously
* Expertly
* Gracefully
Examples:
* "The chef deftly sliced the tomatoes."
* "She deftly avoided the oncoming traffic."
* "The magician deftly performed his tricks."
"Deftly" is often used to describe actions that require both physical and mental dexterity, such as playing a musical instrument, performing surgery, or writing a complex piece of code. It can also be used to describe actions that are done in a subtle or elegant way, such as the way a dancer moves or the way a writer weaves words together.