pile on

Verb

pile on (third-person singular simple present piles on, present participle piling on, simple past and past participle piled on)

1. (ambitransitive) To jump on top of someone or something quickly.
   • As football linebackers pile on a quarterback in a blitz, the newspaper editorialist heaped sarcasm onto the president.2006, Steven M. Hallock, Editorial and Opinion: The Dwindling Marketplace of Ideas in Today's News, Praeger, →ISBN, page 69
   • Piling on: Players may not pile on a runner after the ball is dead or intentionally fall upon any prostrate player.2009, Human Kinetics with Thomas Hanlon, The Sports Rules Book - 3rd Edition, Human Kinetics, →ISBN, page 116
2. (ambitransitive, figuratively) To criticize someone or something in a concerted effort; to add on some additional critique.
   • OK, OK, they've already gotten the constructive criticism. Now you're just piling on.
   • Piling on Nickelback is old hat. Can't we all just move on already? Chad Kroeger and his band are still the group everyone loves to hate, but after the Queensland police put out a wanted poster for them for ‘crimes against music’ Luke Holland asks: has the hating gone too far?2015 May 20, Luke Holland, “Piling on Nickelback is old hat. Can't we all just move on already?”, in The Guardian
3. (figuratively, intransitive) To unnecessarily extend the margin of a winning score.
4. (informal, transitive) To add or apply in great quantities.