one

Noun

• a single person or thing
  • he is the best one
    
  • this is the one I ordered
    

• 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
    

Adjective

• eminent beyond or above comparison
  • matchless beauty
    
  • the team's nonpareil center fielder
    
  • she's one girl in a million
    
  • the one and only Muhammad Ali
    
  • a peerless scholar
    
  • infamy unmatched in the Western world
    
  • wrote with unmatchable clarity
    
  • unrivaled mastery of her art
    

• being a single entity made by combining separate components
  • three chemicals combining into one solution
    

• indefinite in time or position
  • he will come one day
    
  • one place or another
    

• used informally as an intensifier
  • that is one fine dog
    

• of the same kind or quality
  • two animals of one species
    

• having the indivisible character of a unit
  • a unitary action
    
  • spoke with one voice
    

• used of a single unit or thing; not two or more
  • `ane' is Scottish
    

Related words

• Synonyms: 
  1 , I , ace , single , unity , matchless , nonpareil , one(a) , one and only(a) , peerless , unmatched , unmatchable , unrivaled , unrivalled , unitary , i , ane