verb
The word "selfishly" is an adverb because it can be used to modify verbs or adjectives.
A verb is modified by an adverb or an adverbial phrase.
An adjective can only modify a noun, pronoun, or noun phrase. It cannot modify a verb, adverb, adjective, or other part of speech...or it would not be acting as an adjective.
Not sure if it is preposition or adverb. What does it modify?
"Spendthrift" is fundamentally a noun. Like many nouns, it can be used as a "substantive adjective" to modify other nouns, as in "spendthrift trust."
when this and that are used to modify nouns they are treated as which part of speech
An adverb typically modifies a verb, an adjective, another adverb, or a whole clause.
Gag answer: adverds Real answer: adverbs
nouns and pronouns.
adjectives
The word "useful" is an adjective. It describes a noun by indicating that something has a practical purpose or is beneficial in some way.
Gag answer: adverds Real answer: adverbs
Adjacent is an adjective, so it modifies a noun.
An adverb is a part of speech that modifies verbs, adjectives, or other adverbs by providing information about how, when, where, or to what extent something is done.
The word "selfishly" is an adverb because it can be used to modify verbs or adjectives.
A verb is modified by an adverb or an adverbial phrase.
An adjective can only modify a noun, pronoun, or noun phrase. It cannot modify a verb, adverb, adjective, or other part of speech...or it would not be acting as an adjective.