Intensifiers and Mitigators

Intensifiers with strong adjectives:

Strong adjectives are words like:

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

We do not normally use very with these adjectives. We do not say something is "very enormous" or someone is "very brilliant".
Read more:

http://learnenglish.britishcouncil.org/en/english-grammar/adjectives/intensifiers

Mitigators are the opposite of intensifiers. When we want to make an adjective less strong we use these words:
fairly - rather - quite
Read more:http://learnenglish.britishcouncil.org/en/english-grammar/adjectives/mitigators

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