own up (to), to

own up (to something)

to admit something; to confess to something. I know you broke the window. Come on and own up to it.
See also: own, up

own up

Confess, make a full admission, as in Come on, Tim, you'd better own up that you lost the car keys. This idiom uses the verb own in the sense of "acknowledge." [Colloquial; mid-1800s]
See also: own, up

own up

v.
To confess to something; admit something: If the person who stole the erasers doesn't own up, recess will be canceled. The thief owned up to the crime.
See also: own, up

own up (to), to

To admit something, to confess. Dating from the mid-1800s, this expression seems to use own in the sense of possessing responsibility for something. “On being arrested he owned up to his crime,” appeared in the Boston Journal (May 23, 1890).
See also: own, up