IPA: /məˈnjuməntəli/
KK: /mɑnˈjumɛntəli/
In a way that is very large, important, or significant.
The project was monumentally challenging, requiring a lot of effort and resources.
Monumentally → It is formed from "monument" (from Latin *monumentum*, meaning a memorial or reminder) and the suffix "-ally" (meaning in a manner relating to). The word "monumentally" means in a manner that relates to or resembles a monument, often implying something of great significance or scale.
Think of a 'monument' as a significant reminder or memorial, and remember that 'monumentally' describes something done in a way that is grand or significant, just like a monument.