What is the Comparative and superlative meaning of word interesting?

The word "interesting" is already a comparative and superlative form in itself. There is no separate comparative or superlative form of "interesting."

Here's why:

* Interesting is an adjective describing something that captures attention, engages curiosity, or is thought-provoking.

* More interesting is the comparative form, used to compare two things.

* Most interesting is the superlative form, used to compare three or more things.

So, instead of looking for distinct comparative and superlative forms, we use "more interesting" and "most interesting" to express the degrees of interest.

Example:

* "That movie was interesting, but the book was even more interesting."

* "Of all the museums I visited, the art museum was the most interesting."