Last year I wrote a few hundred words on the adjective thrifty for a book being put together by Workman Publishing Company. The book is now out. It's called Be Thrifty: How to Live Better with Less. They sent me a copy (for free!) and it looks like a fun book. Full of tips and hints for being smart with resources.
Given my grad student status, I'd say my real expertise is in the whole living "with less" part. But I'm happy to talk about words whenever asked. And if you're willing to pay me… please do.
Disclosure: I was paid up front for what I wrote, and I get nothing from the sales. Of course I still have an interest in making sure the folks at Workman are happy to work with me again if the opportunity arises.