Quick-witted is an adjective meaning able to think or respond quickly and effectively.
Whilst it would be fair to say that someone who is quick-witted is also intelligent, it would be erroneous to jump to the conclusion that one is the synonymous with the other.
The best synonym for vacuous is 'intelligent'
Clever Intelligent
Intelligent
Analytical, intelligent, pertinent, etc.
no it is not... "ponder" and "wonder", however, are
Smart, intelligent, perceptive
Many people believe that creationism is a one word synonym for intelligent design. Though this is not true, I hope it may be the answer you are looking for.
smart
A synonym for "intelligent" is "smart." Other synonyms include "wise," "brilliant," and "clever." These words convey a similar meaning related to the ability to think, understand, and learn effectively.
No it isn't; the two words have entirely different meanings.
Perceptive, intelligent, clever, savvy, perspicacious, canny, sharp...
Genius Intellectual Smart Academic brilliant brainy intelligent