jump on somebody phrasal verb informal (see also jump)
to criticize or punish someone, especially unfairly
jump on somebody for
He used to jump on me for every little mistake.

[TahlilGaran] Dictionary of Contemporary English ▲

jump on
scold/criticize/blame someone
Everybody jumped on the supervisor because they were angry about the new schedules.

[TahlilGaran] English Idioms Dictionary ▲

jump on
v. phr., informal To scold; criticize; blame.
Tom's boss jumped all over Tom because he made a careless mistake.
Janice landed on Robert for dressing carelessly for their date.
"I don't know why Bill is always jumping on me; I just don't understand him," said Bob.
Compare: FIND FAULT, GET ON, LAY OUT⁷.

[TahlilGaran] English Idioms Dictionary ▲

jump on someone
scold/criticize/blame someone
Everybody jumped on the supervisor because they were angry about the new schedules.

[TahlilGaran] English Idioms Dictionary ▲