mod. trivial; cheap. (See also ante.) : I'm sick of this penny-ante stuff. Let's get serious.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
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Word Origin & History
penny-ante (adj.)
"cheap, trivial," 1935, from penny + ante (q.v.), in ref. to poker played for insignificant stakes.