The term 'Quick-witted' refers to a person who is able to think and react in a rapid, intelligent manner. It's a quality that is highly regarded in society, one that allows individuals to deal with challenges and make decisions in a timely and efficient manner. However, the term's antonyms include a range of terms that connote the lack of instant, intelligent thought. These include lethargic, dull-witted, obtuse, slow-paced, sluggish, and unresponsive. Considering the opposite of quick-witted, these terms suggest a tendency to take time to process information, make decisions with less efficiency, and struggle to adapt to changing situations.