beg to differ

beg to differ idiom
Disagree with someone, as in John told me Max was sure to win, but I beg to differ—I don't think he has a chance. This courteous formula for expressing disagreement echoes similar uses of beg in the sense of “ask,” such as I beg your pardon, so used since about 1600. Also see excuse me.

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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