tell on

verbs

give away information about somebody
"He told on his classmate who had cheated on the exam"
betray, denounce, give away, grass, rat, shit, shop, snitch, stag, tell on
produce an effect or strain on somebody
"Each step told on his tired legs"
tell on
is a type of (narrower)
have an effect upon
"Will the new rules affect me?"
affect, bear on, bear upon, impact, touch, touch on