challenging
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 more challenging findings involved how these antibiotics behave inside fish.
From Science Daily
"He also didn't let me settle. He was very good at challenging people and helping students be the best they can be. Above all, he's a very funny, genuine, nice guy."
From Science Daily
“It’s a terrible idea to move swiftly and not have the really complicated and challenging process that is required to actually work towards more than a superficial pretense of revisionist history,” Gudis said.
From Los Angeles Times
Still, he said the last 15 years have been particularly challenging.
From Los Angeles Times
It remains challenging to determine whether losing the Y chromosome directly causes disease or simply occurs alongside it.
From Science Daily
From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.