Choose the correct ANTONYM for sullen from the options given below.

genial

The correct answer is Option (4) - genial

"Sullen" refers to someone who is gloomy, moody, or ill-tempered.

"Genial," on the other hand, means friendly, cheerful, or pleasant in manner. Therefore, it is the opposite or antonym of "sullen."

1. Morose: "Morose" means sullen and ill-tempered. It is synonymous with "sullen," so it is not the antonym. Instead, it's a synonym, which means it has a similar meaning.

2. Reticent: "Reticent" means reserved, quiet, or reluctant to speak.

3. Timid: "Timid" means lacking in courage or shy.