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.

When the cells were removed, pigeons struggled to find their way home, pointing to a previously unknown role in navigation.

From Science Daily • May 31, 2026

Gum arabic, a resin that comes from the acacia tree, is as ubiquitous as it is unglamorous, virtually unknown despite being a vital ingredient in hundreds of products.

From Los Angeles Times • May 31, 2026

The timing and details of any resolution are unknown, but investors may want to have a list of potential beneficiaries at the ready.

From Barron's • May 30, 2026

About 40 children and young people aged under 18 die unexpectedly in the UK every year from unknown causes, in which investigations failed to uncover a reason.

From BBC • May 29, 2026

Who knew how many amazing things were out there, unknown, waiting to be discovered?

From "Jeremy Thatcher, Dragon Hatcher" by Bruce Coville