It's not an adverb at all, but an adjective! "You look cheerful!"The adverbial form is "cheerfully", or, to be colourful, "cheerily". "He grinned cheerfully at the crowd."Cheerfully is an adverb of manner as it tells us how the verb is done or happens.
No. Crowded is an adjective. The seldom-used adverb is "crowdedly."
Heavily is the adverb form of heavy.Heavily
The adverb form is "noisily."
No, it is an adjective. Anonymously is the adverb form.
Quickly is an adverb that could be used with moved, i.e. "The boy moved quickly through the crowd."
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.
Diametrically is the adverb form.
The adverb form is measurably.
The adverb form in 'readily'
The adverb form is originally.