undetected

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.

The outbreak went undetected for weeks and crossed into Uganda.

From The Wall Street Journal • Jun. 2, 2026

The first known case was a nurse who developed symptoms on 24 April, so the virus had been spreading undetected for weeks.

From BBC • May 18, 2026

A higher threshold may reduce wrongful interventions but could allow legitimate threats to go undetected.

From Salon • May 12, 2026

"This won't eliminate deepfakes entirely, but it can significantly reduce their reach and impact by making it harder for manipulated content to go undetected or unchallenged," he added.

From Barron's • Apr. 24, 2026

But they had survived the first day undetected.

From "Chasing Lincoln's Killer" by James L. Swanson