carefully
No. The word abstract can be a noun, a verb, or more generally an adjective. The adverb form is abstractly.
Neatly is ADVERB. It answers the question "HOW".
Abstract noun
No. It is an abstract noun.
No, it is an adverb.
Speculatively is an adverb. The abstract noun is speculation (speculativeness).
The abstract noun form for the adverb seldom is seldomness.
The abstract noun for the adverb gently is gentleness.
No. Retirement is an abstract noun.
No. Friendship is an abstract noun.
No, seriously is an adverb, a word used to modify a verb, an adjective or another adverb. Example:He seriously injured his knee.The abstract noun form is seriousness.
No, wrongfully is an adverb, a word that modifies a verb, an adjective, or another adverb. Example:He was wrongfully accused of the crime.The abstract noun form for wrongfully is wrongfulness.