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.
Beluga whales are among the most challenging marine mammals to study.
From Science Daily • Jun. 4, 2026
"It had been a long summit push. What should have been five days to the summit and back took us 11 days, that's how challenging the conditions were," said Thrall.
From Barron's • Jun. 4, 2026
Women’s Open, wants Riviera Country Club to be an challenging test and a showcase for women’s golf.
From Los Angeles Times • Jun. 3, 2026
Ryan told MLAs about the case of an autistic teenager with challenging behaviours and "significant social and emotional support needs".
From BBC • Jun. 3, 2026
“It’s just a very challenging plane geometry problem. How do we find ‘X’ without knowing ‘A’? I may need to ask an expert for help.”
From "The Smartest Kid in the Universe" by Chris Grabenstein
![]()
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!