Nonsocial (adjective)

1. Not relating to or involving social interaction or activity.
2. Not outgoing or sociable in behavior or personality.

Origin:

From non- + social, formed in the late 19th century.

Examples:

1. The nonsocial cat preferred to be alone and avoid human interaction.
2. The nonsocial behavior of the student made it difficult for them to make friends.
3. The nonsocial activities included reading and writing, but not socializing with others.
4. The nonsocial insect species lived in solitude and did not form colonies.
5. The nonsocial attitude made it difficult to participate in group activities.