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.
One of the biggest challenges comes from decoherence, a process that introduces errors into quantum systems.
From Science Daily
In his statement, Mr Ghaffur said the former MP had "played an important role in challenging extremism and promoting community cohesion" after the London bombings in 2005.
From BBC
He says the film gave the brothers an opportunity to challenge stereotypical representations of Nigeria.
From BBC
Here are some ways to keep costs down by focusing on two challenges people face as they age: preventing a fall and getting around after a hospital stay.
“In an atomized society,” Ms. Liu observes, “where it’s easy to simply withdraw and isolate oneself, the crucial challenge was to do just the opposite: to reach out, reconnect, and rebuild community.”
From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.