prove (something) to (one)(redirected from prove that to)
prove (something) to (one)
To show or provide evidence that substantiates or makes one believe a claim. This case is your chance to prove your worth to the firm. I want to prove my theory to the panel.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
prove something to someone
to substantiate a claim about something to someone; to make someone believe or accept a statement about something. What do I have to do to prove my innocence to you? Nothing you say will prove it to me.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.