challenges
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.
Scientists have uncovered an unexpected way the immune system can attack cancer, a finding that challenges a long-standing principle in immunology and could lead to new approaches for cancer treatment and bone marrow transplantation.
From Science Daily • Jun. 4, 2026
Several of the companies he shorted, or bet against, turned out to have real challenges.
From The Wall Street Journal • Jun. 4, 2026
Analysts however pointed to challenges for Oh should he embark on a bid for presidency.
From Barron's • Jun. 4, 2026
One of the biggest challenges remains charging infrastructure.
From BBC • Jun. 3, 2026
Without an ability to compose fiction, Neanderthals were unable to cooperate effectively in large numbers, nor could they adapt their social behaviour to rapidly changing challenges.
From "Sapiens: A Brief History of Humankind" by Yuval Noah Harari
![]()