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 Wall Street Journal and other US media, citing unnamed officials, reported that American forces had blown up two C-130s after they became stuck for unknown reasons.

From Barron's • Apr. 5, 2026

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 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

"We are going into the unknown," she said sternly, "And time is precious. We cannot afford to miss a chance to speed our way. Who knows Sheba best?"

From "Rowan of Rin" by Emily Rodda