The opposite of "glossy" is "matte."
Not one specific person said it. It is known as a proverb. A proverb is something that is said that holds some truth to life and is passed down from generation to generation in a community. Here is a link to a really great quote site I found that has a search engine for quotes only and the other is a little more information on a proverb.
A denial of responsiblity. eg in an insurance policy it might say "Invalid when due to civil unrest". This is a disclaimer to say that you would not be paid if your problem was due to rioting.
Valise Portmanteau (although this term is not used very much today) Tote, Bag, Purse, Duffle all come to mind.