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.
In a separate case, Imamoglu is facing an even more significant legal obstacle: a lawsuit challenging the validity of his university degree -- a constitutional requirement for presidential candidates in Turkey.
From Barron's
However, these isotopes are extremely difficult to study because they are challenging to create in laboratory experiments.
From Science Daily
China’s capabilities are “an order of magnitude more challenging” than Iran’s, said Michael Horowitz, who served as U.S. deputy assistant secretary of defense in the Biden administration.
However, maintaining these habits long term can be challenging.
From Science Daily
Developing treatments that adjust MeCP2 levels is challenging because the brain requires the protein to stay within a narrow range.
From Science Daily
From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.
