Origin 1965–70; Americanism; orig. in verb phrases put up a poor mouth, make a poor mouth
bad-mouth.) ]]> Please don't poor-mouth my brother.]]> Spend more time looking for a job and less time poor-mouthing.]]>Copyright 2007. Published by McGraw-Hill Education.]]>Dictionary of American Slang and Colloquial Expressions
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.