Interesting tool here, where you can search for terms in professors' teaching reviews, by discipline and gender.
The gender associations of "genius" with male professors are already fairly well known. Here's how they show in this database:
Apologies for the blurry picture. Click on it to make it clearer!
On the other hand, terms like "mean", "strict", and "unfair" tend to occur more commonly in reviews of female professors. Here's "strict":
How about "sexy"? You might imagine that going either way: Maybe female professors are more frequently rated by their looks. On the other hand, maybe it's "sexier" to be a professor if you're a man. Here how it turns out:
I can't resist adding one more. "Favorite":