run rampant

idiom

: to be very common or to spread very quickly and in a way that is difficult to control

Rumors of her engagement ran rampant.

Examples of run rampant in a Sentence

Recent Examples on the Web

Meanwhile, misinformation about the government's response — shared by former President Donald Trump on numerous occasions — has run rampant. —Kaia Hubbard, CBS News, 13 Oct. 2024

And starting antibiotics during this stage can’t speed recovery—the bacterial toxins have already run rampant. —Meghan Bartels, Scientific American, 9 Oct. 2024

Buy Now 09 of 10 ‘The Most Famous Girl in the World’ by Iman Hariri-Kia Energy and humor run rampant in this novel, about Rose, a journalist attempting to take down scam artist Poppy Hastings. —Carly Tagen-Dye, Peoplemag, 26 Sep. 2024

However, in the wake of Combs’ arrest, questions about Combs and anyone in his orbit have run rampant. —Nardine Saad, Los Angeles Times, 25 Sep. 2024