transitive verb 1 : to dispute especially as being unjust, invalid, or outmoded : impugn new data that challenges old assumptions

List of Internet challenges A person taking the ALS Ice Bucket Challenge This is a list of Internet challenges.

The lawsuit is a challenge to the lower court's decision. Both teachers have had to deal with many challenges to their authority.

So we can say it's hard for us to know, we know that challenges are underreported, but we don't know by how much.

Other forms: challenged; challenges; challenging A challenge is something that puts you to the test — like running your first marathon or reading War and Peace.

Extra Examples The demonstration represents a direct challenge to the new law. He was answering challenges to the government's policy.

Define challenges. challenges synonyms, challenges pronunciation, challenges translation, English dictionary definition of challenges. n. 1. a. A call to engage in a contest, fight, or competition: a …

to make demands on; stimulate: the job challenges his ingenuity to order (a person) to halt and be identified or to give a password to make formal objection to (a juror or jury) to lay claim to (attention, …

The first-ever Missouri Birding Challenge offers new and experienced birders a fun way to meet birding challenges in a variety of different categories. We hope that people new to birdwatching will get …

6 days ago · What are the ten most pressing challenges facing federal, state, and local governments? Here's a roadmap for government executives.