monumental
adj.adj. very large, impressive, or important. It describes something that is much bigger or more significant than usual.
adj. extremely large, impressive, or significant in scale or importance. Often describes physical structures or historical achievements that have a lasting impact.
The task of rebuilding the city was monumental.
Archaeologists discovered a monumental stone structure that changed our understanding of the ancient civilization's engineering skills.
The decision to merge the two global corporations was a monumental shift in the industry, triggering a series of regulatory reviews across three continents.
Borrowed from Late Latin monumentālis, from Latin monumentum; equivalent to monument + -al.
Can be used both attributively before a noun and predicatively after a linking verb like 'be' or 'seem'.