What is the comparative and superlative forms of complete?

The word "complete" is already in its superlative form. There is no comparative or superlative form of "complete".

Complete means "whole, entire, lacking nothing".

To express different degrees of completeness, you can use adverbs:

* More complete (comparative)

* Most complete (superlative)

For example:

* "This plan is more complete than the previous one."

* "This is the most complete collection of his works."