Fast is both an adjective and an adverb. Quick is an adjective and the adverb form is quickly. Fast and quick are adjectives. You walk very fast!

Some common synonyms of speedy are expeditious, fast, fleet, hasty, quick, rapid, and swift.

adverb. with speed; rapidly; very soon.

quickly (adv.) + -ly (2), and compare late Old English cwiculice “vigorously, keenly.” Meaning “rapidly, in a short space of time” is from c. 1200.

Quicker means in a smaller amount of time. Faster means at a higher rate of speed.

Although King acknowledges that the Flash is theoretically faster than Superman, when given a reason to push himself beyond his limits, Supes can turbo boost his speed to a level that even the fastest man alive has difficulty keeping up with.

Superlative form of fast: most fast. Superlative form of fast: most fast. …

Strictly speaking, fast is an adjective while quickly is an adverb. Fast refers to speed, and quickly refers to time. The confusion arises because American English speakers have no qualms about using fast as an adverb. British English speakers, however, tend to avoid that usage.

A: Quickly is the adverb form of quick. Many dictionaries, however, describe quick as a very informal use of quickly, as in your first example, sentence (a)….Quick vs. quickly.

The Fastest Typing Speed Currently, the fastest English language typist is Barbara Blackburn, who reached a peak typing speed of 212 wpm during a test in 2005, using a Dvorak simplified keyboard. The average wpm speed is only 41.4 words in one minute.

Some adverbs have irregular comparative and superlative forms….