Antonyms of adj monumental

2 of 3 senses of monumental

Sense 2
monumental -- (of outstanding significance; "Einstein's monumental contributions to physics")

INDIRECT (VIA significant) -> insignificant, unimportant -- (devoid of importance, meaning, or force)

Sense 3
massive, monolithic, monumental -- (imposing in size or bulk or solidity; "massive oak doors"; "Moore's massive sculptures"; "the monolithic proportions of Stalinist architecture"; "a monumental scale")

INDIRECT (VIA large, big) -> small, little -- (limited or below average in number or quantity or magnitude or extent; "a little dining room"; "a little house"; "a small car"; "a little (or small) group")
INDIRECT (VIA large, big) -> small, little -- (limited or below average in number or quantity or magnitude or extent; "a little dining room"; "a little house"; "a small car"; "a little (or small) group")

Similarity of adj monumental

3 senses of monumental

Sense 1
monumental -- (relating or belonging to or serving as a monument; "the use of the arch in monumental architecture"; "monumental sculptures")

Sense 2
monumental -- (of outstanding significance; "Einstein's monumental contributions to physics")
       => significant (vs. insignificant), important -- (important in effect or meaning; "a significant change in tax laws"; "a significant change in the Constitution"; "a significant contribution"; "significant details"; "statistically significant")

Sense 3
massive, monolithic, monumental -- (imposing in size or bulk or solidity; "massive oak doors"; "Moore's massive sculptures"; "the monolithic proportions of Stalinist architecture"; "a monumental scale")
       => large (vs. small), big (vs. little) -- (above average in size or number or quantity or magnitude or extent; "a large city"; "set out for the big city"; "a large sum"; "a big (or large) barn"; "a large family"; "big businesses"; "a big expenditure"; "a large number of newspapers"; "a big group of scientists"; "large areas of the world")