default on

default on (something)

To fail to repay a loan on something (which often results in the loss of that thing). If you default on your car loan, your car might get repossessed.
See also: default, on
Farlex Dictionary of Idioms.

default on something

to fail to act in some way regarding something, such as failing to make a payment, thereby losing one's right to the thing in question. You are not going to default on your loan, are you? She defaulted on her mortgage payments and lost the house.
See also: default, on
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • default on (something)
  • panda car
  • stop behind
  • stop behind (someone or something)
  • run over
  • crash and burn
  • clunker
  • nudge out
  • pull up alongside (someone or something)
  • reach speeds of (up to) (some amount)