They're on
Buzzer, but I want to give the highlights.
-2 dictionary sources make up the word base, but you can go off the board with popularly used "coined" words.
-Opposites and rhymes are okay, but "rhyme" isn't, even though "opposite" is
-Vocal inflection and minor gesturing is okay; singing isn't
-Apostrophes are okay; hyphens aren't (except for e-mail)
-Proper nouns and "well-known" brand names are okay; strictly foreign words and acronyms aren't
-Form and/or stem or the word are accepted as correct guesses.
To me, there seems to be some minor inconsistencies, but I can't imagine there was that big a stink.