IPA: /ˈdɛftnəs/
KK: /dɛftnəs/
The quality of being skillful and quick in movement or action.
Her deftness in handling the delicate instruments impressed everyone in the lab.
Deftness → It is formed from "deft" (from Old English "deofe", meaning skillful or dexterous) and the suffix "-ness" (meaning the state or quality of). The word "deftness" refers to the quality of being skillful or nimble in movement or action.
Think of being 'skillful' ('deft') and the '-ness' indicating a state. This helps you remember that deftness means the quality of being skillful.