Synonyms of monumental

Adjective

1. monumental

usage: relating or belonging to or serving as a monument; "the use of the arch in monumental architecture"; "monumental sculptures"

2. monumental, significant (vs. insignificant), important

usage: of outstanding significance; "Einstein's monumental contributions to physics"

3. massive, monolithic, monumental, large (vs. small), big (vs. little)

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

Definition and meaning of monumental (Dictionary)