I frequently hear people using the two words "off of" within sentences, and for some reason it makes me cringe.
In a sentence such as "he took it off of the shelf" the off is superfluous in my opinion, and sounds daft.
Is there a right and wrong here?
Here's what Dictionary.com has to say:
Usage Note: The compound preposition off of is generally regarded as informal and is best avoided in formal speech and writing: He stepped off (not off of) the platform. Off is informal as well when used to indicate a source: formal style requires I borrowed it from (not off) my brother.