ace

Adjective

• of the highest quality
  • an ace reporter
    
  • a crack shot
    
  • a first-rate golfer
    
  • a super party
    
  • played top-notch tennis
    
  • an athlete in tiptop condition
    
  • she is absolutely tops
    

Noun

• a serve that the receiver is unable to reach

• a major strategic headquarters of NATO; safeguards an area extending from Norway to Turkey

• proteolytic enzyme that converts angiotensin I into angiotensin II

• someone who is dazzlingly skilled in any field

• one of four playing cards in a deck having a single pip on its face

• the smallest whole number or a numeral representing this number
  • he has the one but will need a two and three to go with it
    
  • they had lunch at one
    

Verb

• serve an ace against (someone)

• play (a hole) in one stroke

• score an ace against
  • He aced his opponents
    

• succeed at easily
  • She sailed through her exams
    
  • You will pass with flying colors
    
  • She nailed her astrophysics course
    

Related words

• Synonyms: 
  A-one , crack , first-rate , super , tiptop , topnotch , top-notch , tops(p) , Allied Command Europe , ACE , angiotensin converting enzyme , angiotensin-converting enzyme , one , 1 , I , single , unity , breeze through , pass with flying colors , sweep through , sail through , nail