Gloomy, depressed.
sad
cheerful, joyful
gloomy
The antonym for the word "sullen" is "cheerful." While "sullen" describes a gloomy or moody disposition, "cheerful" conveys a sense of happiness and positivity. Other possible antonyms include "joyful" or "lighthearted," which also reflect a bright and lively demeanor.
Cheerful, joyful
Yes
cheerful or Happy
excitedly...
Cheerful or unworried. Either one.
The antonym of logical is illogical. The antonym of jovial (cheerful - the nature of Jupiter) would be saturnine (gloomy - the nature of Saturn).
Joyful, or joyous, as joy is the antonym of sorrow. Other antonyms are happy, gleeful, glad, and cheerful.
Happy, joyful, or cheerful. Those are opposites of wailed.