Decide is a verb.
The verb of decisively is decide. As in "to decide something".
Decide is the verb and decidedly would be an adverb. But it has other connotations besides referring to a decision.
Isn't is a contraction of both a verb and an adverb. Is (verb) not (adverb).
It is the definitive verb 'To Come'.
NO!!! It is part of the verb 'To do'.
"Is" is the verb. There is no adverb in the question.
NO!!!! An adverb qualifies a verb. e.g. The dog barked loudly. Verb ; barked Adverb ; loudly.
It could be. The term "to be" is an infinitive form of the verb, which can function as a noun, adjective, or adverb. Noun - To be or not to be: that is the question. / She wants to be a doctor. Adjective - He cannot decide what kind of doctor to be. Adverb - We are not certain how life came to be.
Alone is not an adverb. An adverb modifies a verb. Alone does not modify a verb (is not an adverb).
No, "seriously" is an adverb, not a verb. It is used to modify a verb, adjective, or another adverb in a sentence.
adverb = something that describes a verb. e.g. (Verb = snoring) (Adverb used with verb = heavily snoring) or (Verb = Kick) (Adverb used with verb = kick vigorously)
An adverb describes(qualifies) an verb. e.g. The dog barked (No adverb; ) The dog barked loudly ( Adverb).