run out on
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Related to run out on: ran out
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1. To leave (some place) very quickly by or as if by running. She ran out in tears after he told her that their relationship was over. I got so embarrassed after botching my presentation that I just packed up my things and ran out of the room.
2. To be depleted of something; to use or sell all of something that is available. Often followed by "of (something)." We better stop at the next exit to make sure we don't run out of gas. The store ran out of bottled water and canned food after the government issued their warning about the storm. Do we have any milk left or did we run out?
3. To leave for a brief period. I have to run out and do a couple of errands. Do you need anything? Will someone run out for some more hamburger buns?
4. To abandon a romantic relationship with one. Often followed by "on (someone)." I don't know what I'll do if Sarah runs out on me. I thought Jack really loved me, but he ran out as soon as I wasn't earning as much money as I used to.
5. To drive or chase someone away (from some place) with force or the threat thereof. In this usage, a noun or pronoun is used between "run" and "out." The sheriff ran the bandits out of town last winter, but it looks like they're back again. The security guard ran out the thieves before they could sneak into the warehouse. My wife ran me out when she found out that I had gambled away our life savings.
run out on (one)
To abandon or leave someone. I can't believe you would even consider running out on your family when they need you the most! My dad ran out on us when I was five, and I never saw him again.
run out on
Desert, abandon, as in He's run out on the family. [First half of 1900s]