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.

The finding challenges long-standing assumptions about how costly reproduction is for animals.

From Science Daily

Traditional approaches depend on maintaining physical phage samples and using specialized host bacteria, which can be especially challenging when working with viruses that infect dangerous human pathogens.

From Science Daily

A theatre company is using drama training to help doctors deal with challenging patients.

From BBC

The report says that ecosystem degradation or collapse "will challenge the UK's food security", pointing to its reliance on global markets for food and fertiliser.

From BBC

It really boiled down to three main challenges:

From MarketWatch