in a world of one's own


: spending so much time thinking about something that one does not notice what is happening
I tried to talk to him, but he was in a world of his own and didn't seem to hear what I was saying.

Dictionary Entries Near in a world of one's own

in a wink

in a world of one's own

in back

Cite this Entry

“In a world of one's own.” Dictionary, Merriam-Webster, Accessed 2 Dec. 2022.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

The Great British Vocabulary Quiz

  • union jack speech bubble
  • Named after Sir Robert Peel, what are British police called?
True or False

Test your knowledge - and maybe learn something along the way.

Universal Daily Crossword

A daily challenge for crossword fanatics.