ace

noun

A playing card with a single spot on it, ranked as the highest card in its suit in most card games.

adjective

Very good.

transitive verb

(in tennis and similar games) serve an ace against (an opponent).

SYNONYMS

adeptchampionconsummateexcellentexpertfinefirst-classfirst-rateformidablemagnificentmarvellousmasterlyoutstandingskilfulsuperlativevery goodvirtuosowonderful