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.
"This strategy delivers good performance even at buried interfaces, which are notoriously challenging to precisely control."
From Science Daily
This dual behavior helps explain why polyamines have been so challenging to interpret in medical research.
From Science Daily
That could be by protecting the club crest or challenging the use of a player's name in unauthorised promotional material.
From BBC
The past couple of years have been challenging for Target.
From Barron's
Lindo spoke about a “challenging career,” one that he hoped would be “an encouraging example to all actors out there who may currently be facing their own challenges.”
From Los Angeles Times
From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.