I'm looking for a word that means knowing about lots of different things, across different fields of study. The idea behind Renaissance man. This might be a noun or an adjective.
Mrs. Jones is (a) ____________. Although she teaches Spanish, she can tutor any student at our school in any subject.
The term polymath is very similar to Renaissance man. They're almost synonymous. Translated from Greek, polymath literally means having learned much. Generally, a polymath is a person of wide knowledge or learning. Filling in the blank in your example sentence:
Mrs. Jones is a real polymath. Although she teaches Spanish, she can tutor any student at our school in any subject.
I think that the term erudite is a good word to describe someone who is well-read and knows a lot of things in general, but not necessarily someone who is an expert in a variety of different subjects to the extent that they can actually teach them.
