A. Talkative
B. Lonesome
C. Cheerful
D. Boring

Explanation:

The word gregarious means a person who likes to live in groups, enjoys company, and is very social.

In simple words: friendly, social, and enjoys being with people.

The opposite of gregarious is lonesome, which means preferring to be alone or feeling lonely.

So, Lonesome is the correct antonym of Gregarious.

Real-Life Example

Imagine two students:

• Ali loves talking to classmates, joins group activities, and enjoys parties → he is gregarious.
• Ahmed prefers sitting alone, avoids group activities, and likes solitude → he is lonesome.

Social and outgoing = Gregarious
Alone and isolated = Lonesome

Main Points for Exams:

• Gregarious means social, friendly, and group-loving.
• It is often used for people who enjoy company.
• Lonesome means lonely or preferring solitude.
• Talkative, Cheerful, and Boring are unrelated to social behavior.
• Therefore, Lonesome is the correct antonym of Gregarious.
• This type of question is common in PPSC, FPSC, CSS, PMS, NTS, IELTS, TOEFL, and other competitive exams.