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1. To exit a building and go outdoors, especially briefly or temporarily. We had been in the conference room for nearly three hours, so we all decided to step outside and get some fresh air. You've been in your office all day working. Why don't you step outside for a little while and clear your head?
2. To leave a building or room, especially briefly or temporarily. Usually used as an invitation or demand, as to have a private conversation or settle a dispute. Let's step outside—I'd rather not talk about this in front of the whole class. A: "You've got a face only a mother could love!" B: "Oh yeah? Care to step outside and settle this like a real man?"
1. to go outside, as if to get some fresh air. I need to step outside for a minute to get a breath of air. Tom and Harry stepped outside for a moment.
2. to go outside to fight or settle an argument. I find that insulting. Would you care to step outside? Max invited Lefty to step outside.
in. to leave the present area and go to another place, presumably to fight. The two—who had been arguing—stepped outside to settle the matter. Do you want to step outside, smart ass?