tell on

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• verb To inform on; to tattle; to tell someone with authority that someone else has done something wrong; usually somewhat childish.
• verb To cause strain to somebody or something.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• verb produce an effect or strain on somebody
• verb give away information about somebody