challenge

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.

Environmental groups said they would challenge the committee’s exemption decision in court.

From Salon • Apr. 7, 2026

"Importantly, there must be transparency for everyone about when and how AI tools are used and they must remain open to challenge."

From BBC • Apr. 7, 2026

He sees this as a bigger challenge but says advances in AI will speed up development, helping researchers decode ever more complex thoughts and make brain-computer interfaces more sophisticated.

From The Wall Street Journal • Apr. 6, 2026

While this process is widely accepted, systems like TOI-5205 b challenge existing models.

From Science Daily • Apr. 6, 2026

Luckily, Penelope had always been good at charades, and she found she rather enjoyed the challenge.

From "The Interrupted Tale" by Maryrose Wood