IPA: /ˈkwɪk.nəs/
KK: /ˈkwɪk.nəs/
The state of being fast or quick in movement or action.
The quickness of the athlete impressed the judges at the competition.
Quickness → It is formed from "quick" (from Old English "cwic", meaning alive or living) and "-ness" (a suffix meaning the state or quality of). The word "quickness" refers to the state of being alive or lively, often interpreted as swiftness or speed.
Think of 'alive' ('cwic') to remember that 'quickness' means the state of being lively or fast.