It is cleanly.
The adverb form is academically.
The adverb form for the noun patience is the adverb form of the adjective patient: patiently.(or the negative adverb, impatiently)
The adverb form of the adjective weird is weirdly (oddly, strangely).
There is no adverb form for the verb to produce or the noun produce.There is an adverb form for the adjective productive; the adverb is productively.
No, it is not an adverb. Stronger is the comparative form of the adjective strong. The related adverb form would be "more strongly."
It depends on the noun or adjective form. The adverb form of the adjective "active" is "actively."
"Often" is already in its adverb form.
No, it is not a preposition. The word clean is a verb, adjective, or adverb.
No, it is not an adverb. Flouncy is an adjective. There is a seldom-used adverb form "flouncily."
No, it is not an adverb. Disappearing is a verb form, and a gerund (noun).
The word error is a noun, and has an adjective form "erroneous." The adverb form is "erroneously."
No. Busy is an adjective. The adverb form is "busily."