IPA: /ˈdɛftli/
KK: /dɛftli/
In a way that shows skill and quickness in doing something.
She deftly handled the difficult situation without any problems.
Deftly → It is formed from "deft" (from Old English "deofe", meaning skillful or clever) and the adverbial suffix "-ly" (meaning in a manner of). The word "deftly" means in a skillful or clever manner.
Think of being 'skillful' ('deft') and doing something 'in a manner' ('-ly') that shows that skill. This helps you remember that deftly means doing something skillfully.