Adjectives can be either gradable or non-gradable:
Gradable adjectives are adjectives like COLD, HOT and FRIGHTENED. You can be very cold or a bit cold. Gradable adjectives show that something can have different degrees.
Non-gradable adjectives are adjectives like MARRIED or WOODEN. You can't be very married or a bit married. Non-gradable adjectives do not have different degrees.
Adjectives like TERRIFYING, FREEZING, and AMAZING are also non-gradable adjectives. They already contain the idea of VERY in their definitions - FREEZING means VERY COLD. They are also called EXTREME ADJECTIVES.
When you speak about gradable adjectives, the low value is a WEAK ADJECTIVE, like BIG.
The high value is a STRONG ADJECTIVE, like ENORMOUS.
enormous, huge = very big.
tiny = very small.
brilliant = very clever.
awful, terrible, disgusting, dreadful = very bad.
certain = very sure.
excellent, perfect, ideal, wonderful, splendid = very good.
delicious = very tasty.