We use words like very, really and extremely to make adjectives stronger:

It’s a very interesting story.

Everyone was very excited.

It’s a really interesting story.

Everyone was extremely excited

We call these words intensifiers. Other intensifiers are:

amazingly - exceptionally - incredibly - remarkably - particularly

We also use enough as an intensifier, but enough comes after its adjective:

If you are seventeen you are old enough to drive a car.

I can’t wear those shoes. They’re not big enough.

Intensifiers with strong adjectives:

When we want to describe something or someone as exceptional you can use a strong adjective. 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 use very with these adjectives. We do not say something is "very enormous" or someone is "very brilliant".

With strong adjectives, for intensifiers we normally use:

absolutely - exceptionally - particularly - really - quite

The film was absolutely awful.

He was an exceptionally brilliant child.

The food smelled really disgusting.

Intensifiers with comparatives and superlatives:

We use these words and phrases as intensifiers with comparative adjectives:

much - far - a lot - quite a lot - a great deal - a good deal - a good bit - a fair bit

He is much older than me.

New York is a lot bigger than Boston.

We use much and far as intensifiers with comparative adjectives in front of a noun:

France is a much bigger country than Britain.

He is a far better player than Ronaldo.

We use these words as intensifiers with superlatives:

easily - by far - far

The blue whale is easily the biggest animal in the world.

This car was by far the most expensive.