thankfully
No, it is an adjective. The adverb form is thankfully.
Yes, thankfully we can use it as an adverb. It is the adverb form of the adjective thankful.
Heavily is the adverb form of heavy.Heavily
The adverb form is "noisily."
No, it is an adjective. Anonymously is the adverb form.
The related adverb form is decreasingly. It is the adverb form of the present participle, decreasing. The past participle, decreased, does not form an adverb.
The adverb form is academically.
The adverb form is secondarily.
The adverb form is measurably.
Diametrically is the adverb form.
The adverb form is originally.
The adverb form is incessantly.