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.

"It has been a long and challenging process but thankfully the treatment is working and we are hopeful we will be ringing the bell soon."

From BBC

Shell responded by challenging the decision in New York state court.

From Barron's

Jet fuel can also be more challenging to replace, for example due to differences in regional standards, Buisson says.

From The Wall Street Journal

"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