Speedy is a specific adjective
speedy
It can be either, because there is no adverb form (fastly) for speed.A fast car (adjective)He drove fast (adverb)
no, fast is an adjective.
"Fast" can function as both an adjective and an adverb. As an adjective, it describes something that moves quickly, such as "a fast runner." As an adverb, it describes the manner of an action, as in "She runs fast."
Yes. Example: He bought a fast car. Fast is an adjective describing car.
The adjective in this sentence is "fast"; "really" acts as an adverb.
Yes it is. An adjective is a word that describes a noun. For example, I have a fast computer.It can also be an adverb, as in "He runs fast."Another use of the adjective or adverb is to mean tight or tightly (held fast).In a separate usage, fast is a verb (to not eat, to abstain).
There is no adjective in that sentence. The word "fast" is sometimes used as an adjective, but in this sentence it modifies the verb "run," so "fast" is an adverb.
fast ball
Yes.It is!
The noun form of the adjective fast is fastness.
Quick, Speed