jawbreaker (noun) candy: confection
Sinonime: acute, astute,
critical, discerning, discriminating,
incisive, keen, penetrative,
perceptive,
perspicacious,
profound, quick, quick-witted,
sagacious,
searching, sharp, sharp-witted, shrewd
Antonime: idiotic,
senseless,
stupid,
unintelligent