- present participle of challenge.
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.
Artificial intelligence chatbots and image generators crunch reams of digital data, but building systems to navigate real-life environments is more challenging.
From Barron's • Jun. 11, 2026
The mystery remains difficult to solve because the full sequence of events that led to life is impossible to observe directly and extremely challenging to recreate.
From Science Daily • Jun. 10, 2026
Frontier artificial intelligence models are challenging some longstanding beliefs about how to make organizations secure.
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
“We have a long, challenging road ahead of us. We’ll be lucky to get past the checkpoint outside the city limits. This guy was the least of our problems.”
From "Summer of the Mariposas" by Guadalupe García McCall
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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