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Verb: tell on
  1. Give away information about somebody
    "He told on his classmate who had cheated on the exam";
    - denounce, betray, give away, rat [informal], grass, shop [informal], snitch [informal], stag, squeak [informal]
  2. Produce an effect or strain on somebody
    "Each step told on his tired legs"

Derived forms: telling on, tells on, told on

Type of: affect, bear on, bear upon, impact, inform, touch, touch on