monumental
mon-yuh-MEN-tuladjMeaning very great in size or importance
Memory hook MONUMENT-al: as big as a MONUMENT. After a whole summer, Lila fits the last of five thousand puzzle pieces into place. Finishing it was a monumental task.
Finishing the five-thousand-piece puzzle was a monumental task.
In context The discovery of the cure was a monumental achievement, one that historians still rank among the most important of the century.
Similar huge, enormous, vast, historic
Opposite tiny, insignificant, trivial
From monument, from Latin monumentum, “a reminder, a memorial,” from monere (to remind).