Quickly is an adverb
The comparative form of quick is more quicker.
The superlative form of quick is quickest.
Dative; Early Comparative; Earlier Superlative; Earliest
Comparative is more and superlative is most.
Dative :smart Comparative; Smarter Superlative; Smartest
Dative; Short Comparative; Shortert Superlative; Shortest
comparative: trustworthier. superlative: trustworthiest.
More quickly is the comparative and Most quickly is the superlative.
The comparative is "more quickly" and the superlative is most quickly.
Comparative form: Quicker Superlative form: Quickest
more quickly and most quickly
more quickly, most quickly
more quickly, most quickly
more quickly, most quickly
more quickly, most quickly
more quickly, most quickly
more quickly, most quickly
They are quicker and quickest, respectively.
Yes, in the example 'he runs quickly but she runs slowly'.