Dictionary.com
Thesaurus.com

space out

Idioms  

  1. Stupefy or disorient, as if or from a drug. For example, This medication spaces me out so I can't think clearly, or I wonder what those kids are on—they look totally spaced out. [1960s] Also see zone out.

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.