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not suffer fools gladly

Refuse to tolerate stupidity, as in Chris can be intimidating at these meetings; she does not suffer fools gladly. This expression comes from the New Testament (II Corinthians 11:19), where Paul sarcastically says, “For ye suffer fools gladly, seeing ye yourselves are wise.” [c. 1600]

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The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.