be in another world(redirected from be in a world of own)
be in another world
To be lost in thoughts or daydreams and thus oblivious to one's surroundings. Jill must have been in another world when I asked her to turn off the oven because the bread is burned now. I have no idea what the professor said during today's lecture because I was in another world the whole time.
be in another worldalso be in a world of your own
to not notice what is happening around you, usually because you are thinking about something else She just sat and stared out of the window most of the time - she seemed to be in another world. I don't think you even heard me, did you? You're in a world of your own.