on conscience

on (one's) conscience

Causing one persistent, nagging guilt for something one did or failed to do. It's because of your cruelty that your brother died. I hope you have it on your conscience for the rest of your days! I really regret the way I treated her in high school. It's still on my conscience to this day.
See also: conscience, on
Farlex Dictionary of Idioms.

on (one's) conscience

Causing one to feel guilty or uneasy.
See also: conscience, on
American Heritage® Dictionary of the English Language, Fifth Edition.
See also:
  • (one) could use (something)
  • drive (one) out of office
  • force (one) out of office
  • force out of office
  • give (one) (one's) head
  • give head
  • give somebody their head
  • give someone their head
  • cooking for one
  • 1FTR