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.
Fear of the unknown kept most at home.
From Los Angeles Times
His exact whereabouts is unknown and his colleagues have demanded proof he is still alive.
From BBC
These insights point to possible new treatment strategies while also highlighting how much remains unknown.
From Science Daily
It added that video footage from before the attack showed "heavy smoke of unknown origin", which it cited as evidence of ammunition detonated by Ukrainian armed forces.
From BBC
But you might well know the idea that made this unknown engineer who recently died into one of America’s greatest inventors.
From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.