The Great Composer Beholden

I bought the game Password for my family, since the kids love Catch Phrase. Password is harder, so I'm not sure successful we'll be.

The Girl (14yo) and I like to just "ping" back and forth, no official game.

The password was "owe," and I said, "beholden."

"Classical music?" she guessed. She thought it sounded like a composer's name. 

It's interesting sometimes what words we haven't run across yet, and so we don't recognize them.

What word did you find yourself embarrassed or surprised that you didn't know?