monumental

Adjective

• imposing in size or bulk or solidity
  • massive oak doors
    
  • Moore's massive sculptures
    
  • the monolithic proportions of Stalinist architecture
    
  • a monumental scale
    

• of outstanding significance
  • Einstein's monumental contributions to physics
    

• relating or belonging to or serving as a monument
  • the use of the arch in monumental architecture
    
  • monumental sculptures
    

Related words

• Synonyms: 
  massive , monolithic