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.

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 value of these resources remains unknown, but could be massive.

From BBC • Mar. 31, 2026

I always feel like something terrible—some awful unknown thing—will happen to my mom or G if I skip these little tasks.

From "Popcorn" by Rob Harrell