unsolved
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.
According to Miskin, independence at sizes below one millimeter has remained an unsolved challenge.
From Science Daily
Among the unsolved problems in robot design is that no one has created a robot with “human-like dexterity,” he writes.
From Los Angeles Times
Despite their efforts, the problem remained unsolved in the show.
From Science Daily
Collaboration is “very difficult” from home and problems often go unsolved, he said.
A public inquiry into the murder of Emma Caldwell - previously one of Scotland's most high-profile unsolved cases - has started its work.
From BBC
From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.