be in another world

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.
See also: another, world
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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