American English

Definition of monumental adjective from the Oxford Advanced American Dictionary



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  1. 1[usually before noun] very important and having a great influence, especially as the result of years of work synonym historic Gibbon's monumental work “The Rise and Fall of the Roman Empire”
  2. 2[only before noun] very large, good, bad, stupid, etc. synonym major a book of monumental significance We have a monumental task ahead of us. It seems like an act of monumental folly. We must act now to avert a disaster of monumental proportions.
  3. 3[only before noun] appearing in or serving as a monument a monumental inscription/tomb a monumental mason (= a person who makes monuments )
See the Oxford Advanced Learner's Dictionary entry: monumental