- present participle of challenge.
challenging
Americanadjective
-
offering a challenge; testing one's ability, endurance, etc.
a challenging course;
a challenging game.
-
stimulating, interesting, and thought-provoking.
a challenging suggestion.
-
provocative; intriguing.
a challenging smile.
adjective
Other Word Forms
Derived Forms
Etymology
Origin of challenging
First recorded in 1300–50; Middle English, as a gerund; 1835–45 for sense of "testing one's ability"; see challenge ( def. ), -ing 2 ( def. )
Explanation
If something is challenging, you better bring your "A game." It isn't going to be easy but you will get to test your skills as you push yourself, like completing a challenging crossword puzzle or a challenging hike up a mountain. Another meaning of challenging is "causing to question values or assumptions," like a challenging movie that makes you re-evaluate your attitude about something. In other words, it challenges what you believe. People sometimes use challenging as a polite — and far more positive — substitute for troublesome or problematic, as in, "This challenging situation will require everyone's patience."
Vocabulary lists containing challenging
Academic Vocabulary Toolkit 1, Words 11-20
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Towers Falling
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Persuasive and Assertive Tones
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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.
As life gradually expanded from deeper waters into shallower marine environments, conditions became much more challenging.
From Science Daily • Jun. 10, 2026
Shake Shack recently cut its outlook for the second quarter of 2026, citing a challenging consumer environment and intensifying competition.
From Barron's • Jun. 10, 2026
“Accommodating the changing needs and preferences of employees in a high-turnover industry is a complex optimization problem that has been challenging, even for sophisticated software to solve,” said Williams Woolley.
From The Wall Street Journal • Jun. 10, 2026
Ignoring that gap could set up loved ones for issues during an already challenging time.
From MarketWatch • Jun. 10, 2026
The paper, with dozens of tables and arcane symbols to denote traits and variants, was challenging even for statisticians.
From "The Gene" by Siddhartha Mukherjee
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
