- 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.
The new focus on the issue shows how the messy policies surrounding open models are challenging CEOs trying to cut their AI bills and policymakers who don’t want the technology used to harm the U.S.
From The Wall Street Journal ● Jul. 21, 2026
Wangchuk has had a long career as an engineer and innovator - and has a long history of challenging the status quo.
From BBC ● Jul. 20, 2026
Constantino, who recently defended his doctorate at UK, said that this atmosphere gave him the confidence to pursue challenging questions that crossed multiple fields.
From Science Daily ● Jul. 20, 2026
Gates, who left the department in November, is now the Republican candidate challenging Bonta to be state attorney general.
From Los Angeles Times ● Jul. 19, 2026
Whaling first brought people to South Georgia Island, and it was to a whaling station that Endurance headed as its final stop before challenging the Antarctic.
From "Shipwreck at the Bottom of the World" by Jennifer Armstrong
![]()
Vocabulary lists containing challenging
Academic Vocabulary Toolkit 1, Words 11-20
Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!
Towers Falling
Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!
Persuasive and Assertive Tones
Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!