A previous question on the forumprevious question on the forum asks what the meaning of 'brand' is in the phrase 'brand new' and the overall view seems to be that it means fire. Ie fresh from the fire.
But what is its grammatical function of 'brand' in this phrase?
If we say it is a noun then the adjective 'new' is in the wrong place - plus no dictionaries label it as an adjective.
And if we say it is an adverb (like you would say 'very new') then no dictionaries I have looked at label it as an adverb.