No, the word finely is not an adjective. This is an adverb.
The adjective of the word is fine.
Yes, it is an adjective. It means rough (opposite of smooth), not ground finely, or vulgar.
Yes, finely ground is acceptable English to describe coffee beans that have been ground into a powder.
It can be, informally, as in "He is doing fine." But this is very close to an adjective use. The formal adverb is "finely."
The word is likely one of these:ground - (adjective) chopped finely (noun) dirt, surfacegroaned - (verb) made a groan, moan, or similar sound
A small girl with a bow placed finely above her head.
Yes! The adjective "supersubtle" was coined circa 1590-1600 CE.
His essay is finely written for a second grader.
the car was finely tuned to decrease its drag coefficient.
Finely ground pepper.
Finely ground tobacco is called snuff.
Sure, if they are finely chopped enough.
The noun 'onion' is a count noun:1 onion finely chopped2 onions finely chopped