from The American Heritage® Dictionary of the English Language, 4th Edition

  • intransitive v. To play a trump lower than another card player's trump when trump has not been led.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • v. To play a lower trump card than the previous one in a trick.

from The Century Dictionary and Cyclopedia

  • To throw a trump to, as a non-trump lead of cards in whist, lower than one already thrown by one's partner.


Sorry, no etymologies found.


  • He kept on taking too many tricks as I seemed to be able to undertrump him the entire game.

    Archive 2006-03-01


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