unknown

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 said he entered the U.S. at an unknown date and will remain in ICE custody pending the outcome of his removal proceedings.

From Los Angeles Times • Apr. 3, 2026

The fate of the weapons operator -- who sits behind the pilot during flight -- remains unknown.

From Barron's • Apr. 3, 2026

The origins of gladiatorial combat are unknown, though it was generally agreed by the Romans that it had been a foreign import.

From The Wall Street Journal • Apr. 3, 2026

Researchers at Oregon Health & Science University have identified a previously unknown system inside cells that acts like internal "trade winds," rapidly carrying important proteins to the front edge of the cell.

From Science Daily • Apr. 1, 2026

“The likelihood of finding a fossil is very low. It is unknown whether fossils even exist on Mars,” I say as I download more of the information that I have in my system.

From "A Rover's Story" by Jasmine Warga