identical

Adjective

• coinciding exactly when superimposed
  • identical triangles
    

• having properties with uniform values along all axes

• (of twins) derived from a single egg or ovum
  • identical twins are monovular
    

• being the exact same one; not any other:
  • this is the identical room we stayed in before
    
  • the themes of his stories are one and the same
    
  • saw the selfsame quotation in two newspapers
    
  • on this very spot
    
  • the very thing he said yesterday
    
  • the very man I want to see
    

• exactly alike; incapable of being perceived as different
  • rows of identical houses
    
  • cars identical except for their license plates
    
  • they wore indistinguishable hats
    

Related words

• Synonyms: 
  superposable , monovular , selfsame(a) , very(a) , indistinguishable
• Antonyms: 
  fraternal , biovular