more rapidly
more rapidly
more rapidly
more rapidly
more rapidly and most rapidly
Rapidly doesn't have a tense because it is an adverb and not a verb.
more rapidly, most rapidly
comparative=tenser superlative =tensest
The comparative form of "tense" is "more tense." It is used when comparing the degree of tension between two or more things or situations.
A superlative form of something compares three or more things. For example, the superlative form of beautiful would be most beautiful and the comparative form would be more beautiful. Another example would be big, superlative would be biggest and comparative would be bigger.
More quickly would be the comparative form. Any adverb that ends with an "-ly" would take more for comparative and most for the superlative forms.
The past tense of "least" is "least." It remains the same in all forms.