challenge
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.
A new study from the University of Michigan challenges that long-standing assumption and suggests evolution may work very differently than once thought.
From Science Daily
A key engineering challenge: ensuring enough fresh air for tunnel workers now, and once diesel-fueled army trucks are running through it.
"Christmas can be a lot more challenging," Elizabeth added.
From BBC
“But when evaluating AMC’s performance in the context of the third quarter’s challenging industry-wide environment, I see our company firing on all cylinders.”
From Barron's
It moves the challenge from finding the right program to finding the right kind of computing matter.
From Science Daily
From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.