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.
The findings, published Feb. 4 in Nature, challenge long-standing views of Parkinson's disease and point toward a new era of more precise and targeted treatment approaches.
From Science Daily
The reverse-recruiting model is another sign of the mounting challenges for white-collar job seekers.
“Companies aren’t going to just ditch the software that is embedded into all their systems overnight. But as a long-term challenge, AI looks like a reasonable threat to software.”
Sourcing enough sustainable aviation fuel remains a challenge for the entire industry because production is still limited and it costs far more than conventional jet fuel.
From BBC
"Waterfall Country is a naturally challenging landscape with steep, uneven terrain and paths that can be affected by weather, erosion, and high visitor pressure."
From BBC
From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.