retire into oneself

Perhaps:

"retreat into oneself"

Hi,

Marius, do you mean someone "retired into himself " is a wrong idiom? I found this idiom in a book.
Thank you for your reply.

Hi,

It's not an idiom. But, in a suitable context, it would be understandable.

Clive

what does it mean?

It means to withdraw one's attention or consciousness from one's surroundings-- perhaps to meditate, or perhaps in a form of mental illness.

Thank you all for your replies.

Could it mean that someone doesn't associate with other people any more and join any social activities?

Hi,

Yes.

Clive

Thank you, Clive.

I wish you a happy New Year!

Hi,

Thank you. And the same to you.

Clive

"The most effectual means of being secure against pain, is to retire within ourselves..." (Thomas Jefferson, 1786 Letter to Maria Cosway)