underground activity

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

They will point out—and they love to point this out—that legalization has brought sunlight to an underground activity and allowed authorities to detect irregular betting patterns and catch offenders.

From The Wall Street Journal • Oct. 24, 2025

Various forms of underground activity, such as deep wells or the disposal of hazardous materials, require the long-term sealing of rocks.

From Science Daily • May 22, 2024

“I was afraid, but I’d been involved in this underground activity for a long time, and I knew that at some point I would end up in prison,” Rybakov said.

From Washington Post • Dec. 23, 2022

Thursday The White House says the U.S. government’s early analysis of underground activity in North Korea “is not consistent” with that country’s claim of having conducted a successful hydrogen bomb test.

From Washington Times • Jan. 6, 2016

“You tried, this time. But remember—you have no cards except the three for you, Opa, and Tante Betsie. There is no underground activity here, you don’t understand what they’re talking about. . . .”

From "The Hiding Place" by Corrie ten Boom