zone out Informal
Meaning: If someone zones out, they look blankly ahead without paying attention, maybe because they're tired or bored or affected by drugs.Synonym: space out (American, informal)
- zone out Peter sometimes gets bored in class and zones out. He looks like he's a million miles away.
- be zoned out I was talking to Debbie, but she was so zoned out that she didn't even hear me.
I knew Jamie was zoning out because he was