monumental

the word 'monumental' is built upon the latin noun 'monumentum', which itself derives from the verb 'monere', meaning 'to remind, warn, or advise'. this root is visible in other english words like 'admonish' and 'premonition'. the suffix '-al' is a productive latin-derived ending used to form adjectives meaning 'relating to'. therefore, the literal sense is 'pertaining to a monument or memorial'. over time, the meaning extended metaphorically from the physical grandeur and lasting importance of a stone monument to describe anything of similarly vast scale, significance, or enduring impact.

Structure: monument (a structure to remember) + al (adjective suffix) monument (from latin 'monumentum', meaning a memorial, a reminder, from 'monere' meaning to remind); al (latin adjectival suffix '-alis', meaning 'of the kind of, pertaining to')