"trumping" in the noun sense
1. ruff, trumping
card games) the act of taking a trick with a trump when unable to follow suit
"trumping" in the verb sense
1. trump
produce a sound as if from a trumpet
2. outdo, outflank, trump, best, scoop
get the better of
"the goal was to best the competition"
3. trump, ruff
play a trump
4. trump, trump out
proclaim or announce with or as if with a fanfare
Source: WordNet® (An amazing lexical database of English)
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