ready wit; quick thinking; improvisational cleverness
Describes the ability to respond cleverly and appropriately on the spot, often in conversation or performance. Can be used as a noun or adjectival noun.
The audience burst into laughter at his quick-witted reply.
A person with a talent for ready wit can handle any situation smoothly.
ready wit; quick repartee; thinking on one's feet
The word is composed of 即 (immediate) and 妙 (exquisite, clever). The exact historical derivation is uncertain, but the combination naturally conveys the idea of instant cleverness.