undertrump

[ uhn-der-truhmp, uhn-der-truhmp ]
/ ˌʌn dərˈtrʌmp, ˈʌn dərˌtrʌmp /

verb (used with or without object) Cards.

to trump with a lower trump than has already been played.

Origin of undertrump

First recorded in 1860–65; under- + trump1

British Dictionary definitions for undertrump

undertrump
/ (ˌʌndəˈtrʌmp) /

verb

(intr) cards to play a lower trump on a trick to which a higher trump has already been played