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.

"This strategy delivers good performance even at buried interfaces, which are notoriously challenging to precisely control."

From Science Daily

This dual behavior helps explain why polyamines have been so challenging to interpret in medical research.

From Science Daily

“We tried to get resources to keep as many students in school as possible, but it’s a daily challenge,” Cardona said.

From Salon

Arsenal's prowess from set-pieces has been a key part of their title challenge, with their 16 goals from corners - three more than anyone else - equalling the most in a Premier League season.

From BBC

That could be by protecting the club crest or challenging the use of a player's name in unauthorised promotional material.

From BBC