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.
However, determining their exact positions in the sky has remained a major challenge.
From Science Daily
Navigating Mother's Day, and other occasions like birthdays and Christmas since Teddy's death, has been challenging, Maddie says.
From BBC
They have shown they can challenge the very best teams in the world.
From BBC
"Long COVID, which can include symptoms of fatigue, shortness of breath, brain fog, other cognitive challenges and more, continues to significantly impact people's lives," said Manson.
From Science Daily
He attributed the state’s fiscal challenges to excessive spending growth and said he worries that a millionaires tax could expand.
From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.