One-up is defined as to try to have an advantage over someone.
To receive as a prize or reward for performance:
(Music) A wind instrument of the trumpet class, having three valves operated by pistons.
To exceed or surpass
A brass instrument, such as a trombone or tuba.
proclaim or announce with or as if with a fanfare
To get the better of; beat:
The definition of a clincher is a point or moment that settles a contest or decision.
To manage, bring about, or deal with by finesse
One that helps:
Find another word for trump. In this page you can discover 19 synonyms, antonyms, idiomatic expressions, and related words for trump, like: one-up, win, cornet, outdo, horn, trumpet, trump card, trump out, ruff, outflank and best.