Third-person singular simple present indicative form of challenge.(verb)
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Use "challenges" in a sentence
"But U.S. spokesmen are stressing the continued value of engagement with, and aid to, Pakistan, and saying the Obama administration is committed to working through what they term challenges in the relationship."
"Mark Feldman, chief strategist the U of T's McLuhan Program in Culture and Technology, says the phrase challenges us to look beyond the obvious."
"Set in a variety of vivid real-world locales, the title challenges players to hone their animal instinct as they uncover hidden dangers, hunt and defeat enemies, and take on seemingly insurmountable situations while discovering the truth about Wolverine's tragic past."