challenge (one) on (something)(redirected from challenge him on)
challenge (one) on (something)
To question one, perhaps aggressively, on a particular issue, statement, or viewpoint. I had to challenge him on that remark about sales because the budget report did not support it at all. That is a positively absurd statement, and I'm glad someone challenged her on it. Challenging someone on their political beliefs the first time you meet them is usually not the best idea.
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.
challenge someone on something
to dispute someone's statement, remarks, or position. I think Fred is wrong, but I won't challenge him on his estimate.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.