in a world of one's own

1. In the place where you belong; in your own personal surroundings; apart from other people.
They are in a little world of their own in their house on the mountain.
2a. In deep thought or concentration.
Mary is in a world of her own when she is playing the piano.
Compare: LOSE ONESELF.
2b.  {slang}
Not caring about or connected with other people in thoughts or actions. — Usually used sarcastically.
That boy is in a world all by himself. He never knows what is happening around him.
Categories: slang world

An client error occurred: Error calling GET https://www.googleapis.com/youtube/v3/search?part=id%2Csnippet&q=%22in+a+world+of+one%27s+own%22&maxResults=4&videoEmbeddable=true&videoSyndicated=true&safeSearch=strict&type=video&key=AIzaSyCfLRuAZZNAQm6a5uDzgY-Tt668bxsppCs: (403) The request cannot be completed because you have exceeded your <a href="/youtube/v3/getting-started#quota">quota</a>.