dull
humorous
playful
diseased
Answer is Wrong!
Answer is Right!
The correct answer is A. dull.
Jocose means humorous or funny. The opposite of humorous is dull, which means not interesting or exciting.
B. humorous is a synonym of jocose, not an antonym.
C. playful is similar to jocose in that it can both mean humorous and fun-loving. However, it can also mean not serious or frivolous, which are not opposites of jocose.
D. diseased is not related to jocose in any way.