monumental
1. [ adjective ] relating or belonging to or serving as a monument
Examples:

"the use of the arch in monumental architecture" "monumental sculptures"

Related terms: memorial
2. [ adjective ] of outstanding significance
Examples:

"Einstein's monumental contributions to physics"

Related terms: significant
3. [ adjective ] imposing in size or bulk or solidity
Synonyms: massive monolithic
Examples:

"massive oak doors" "Moore's massive sculptures" "the monolithic proportions of Stalinist architecture" "a monumental scale"

Related terms: large
Similar spelling:   monument
  monumentalize
  monumentalise