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

Published in Materials Today, the study challenges existing theoretical models and could reshape how scientists think about heat movement through solid materials.

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.

Synonyms for CHALLENGES: objections, exceptions, complaints, questions, difficulties, protests, criticisms, demurrers; Antonyms of CHALLENGES: sanctions, approvals, agreements, …

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

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

Find 72 different ways to say CHALLENGES, along with antonyms, related words, and example sentences at Thesaurus.com.

Master the word "CHALLENGE" in English: definitions, translations, synonyms, pronunciations, examples, and grammar insights - all in one complete resource.

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.

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 …