Mentally alert and sharp; keen. See Synonyms at intelligent.(adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "quick-witted" in a sentence
"Terwyn is best-known as a quick-witted DJ on BBC Radio Cymru programmes for some years."
"Nora was a breakthrough in the representation of women in detective fiction: neither victim nor femme fatale, she was an equal partner, sympathetic, quick-witted, and just as hard-drinking as her husband."
"This title sets the bar pretty high, considering the ordinary collection includes such items as Einstein's blackboard, preserving forever some chalked equations he wrote during a lecture in Oxford in 1931, which some quick-witted don had the prescience not to erase."