monumental

refers to a very great and important accomplishment

refers to a task that requires a very large amount of effort and time

describes actions or creations that are very large and impressive

describes a challenge that is very large and difficult to overcome

used to describe something that is extremely large in size or scale (often used in plural form)

a very large and important project or piece of work

a very large sculpture, often one that commemorates something

a large arch built to commemorate an event or person

writing carved into a monument, tombstone, or building