run out on
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Related to run out on: ran out
1. 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?
2. 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?
3. 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.
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]