I have asked this question in ELL site, but there were not much reply, and so I decided to ask the same question here. Though I will change the question a little bit to exactly what I need more and to ...
In "out of", is the "out" considered a preposition or an adverb?
Compound adjectives functioning as adverbs modifying other adjectives; is it possible and grammatical?
Soul-crushingly bad; heartbreakingly sad; bone-crunchingly violent; etc. I swear I have seen it done, but I am not sure whether it's proper grammar or not.