adj
Freq #18057
Meanings
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1
adj
extremely important or influential, especially in its lasting effects
The discovery was a monumental advance in modern medicine.
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2
adj
enormous, impressive, or requiring a very great effort
Restoring the damaged archive was a monumental task.
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3
adj
relating to, serving as, or resembling a monument
The avenue ends at a monumental stone arch.
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Etymology
Borrowed from Late Latin monumentalis, from Latin monumentum, "memorial, monument." Monumentum derives from monere, "to remind or warn." The figurative senses extend the imposing scale and lasting significance of a physical monument to events, achievements, and tasks.