Note: The form '~al' is also used for meaning 3.
1.
If you say that something is ~, you are emphasizing that you think it is very good or that you like it a lot. (INFORMAL)
I have a ~ social life...
I thought she was ~.
= great
ADJ emphasis
2.
A ~ amount or quantity is an extremely large one.
...~ amounts of money.
ADJ: ADJ n
~ally
...a ~ally expensive restaurant.
ADV: ADV adj/adv
3.
You describe something as ~ or ~al when it seems strange and wonderful or unlikely.
Unlikely and ~ legends grew up around a great many figures, both real and fictitious...
The book has many ~al aspects.
ADJ