There is no adverb form of the adjective "used" (employed, utilized).
Adverbs would have to modify a verb, as with usably (from usable) and usefully (from useful) and uselessly (from useless).
Formulaically is the adverb form of formula.
Yes, thankfully we can use it as an adverb. It is the adverb form of the adjective thankful.
In the English language, "fire" has no adverb form.
No. The word form can be a verb, or a noun with use as an adjunct or adjective (form letters). There is no related adverb other than formably.
The related adverb form is selectively. It is based on the adjective selective.
No. Caution is a noun. To use the -LY suffix, add it to the ADJECTIVE form (which in this case is cautious) and you will form the adverb (cautiously).
The adjective bright has the adverb form brightly. The sun is bright. The sun shines brightly.
The adverb form of by means close by, or passing by, as in: "Let's run by." "The birds flew by"
The adverb form of "fracture" is typically "fracturedly," but it is not commonly used in everyday language. Instead, you could use "broken" as an adverb to describe something that is fractured.
No, it is not an adverb. The word jolly is an adjective. The rarely used adverb form is "jollily." (writers use "in a jolly manner")
The adverb form of the adjective momentous is momentously. e.g. It was a momentously important event.
Heavily is the adverb form of heavy.Heavily