Thesaurus.com
Dictionary.com

difficult problem



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.

“It’s a notoriously difficult problem for classical computers,” Chow explained.

From Barron's • Jan. 29, 2026

“It’s a difficult problem to solve, and California is kind of solving it in real time.”

From Los Angeles Times • Nov. 26, 2025

In a case like Prince Harry and his family, sometimes the best available outcome of a difficult problem is only possible when the other party won't even come to the table.

From Salon • May 10, 2025

"Growth stunting due to undernutrition is a really difficult problem facing global child health, and the lessons we learn will likely apply to many other conditions as well."

From Science Daily • May 10, 2024

It was a difficult problem, as they did not know how many girls were in existence.

From "The Interrupted Tale" by Maryrose Wood