1.
You can use ~ to emphasize the size or extent of something.
...a series of ~ disappointments.
= huge, massive
ADJ: usu ADJ n emphasis
~ly
Suddenly it was ~ly successful...
ADV: usu ADV adj/-ed, also ADV after v
2.
If you describe a book or musical work as ~, you are emphasizing that it is very large and impressive, and is likely to be important for a long time.
...his ~ work on Chinese astronomy.
ADJ: usu ADJ n emphasis
3.
A ~ building or sculpture is very large and impressive.
I take no real interest in ~ sculpture.
ADJ: ADJ n