What is the comparative and superlative form of ghastly?

The word "ghastly" is already in the superlative form. There is no comparative or superlative form of "ghastly."

It's important to note that while "ghastly" is already superlative, you can use more descriptive words or phrases to intensify the meaning, such as:

* Extremely ghastly

* Horribly ghastly

* Utterly ghastly

* More ghastly than ever

However, you can't use comparative or superlative forms like "ghastlier" or "ghastliest."