There is no public list. Someone on reddit compiled a very limited list here: https://old.reddit.com/r/dalle2/comments/wa3jt6/banned_words...

The problem is that they will automatically ban accounts that trigger the filter too much, so people would have to burn a whole lot of accounts to assemble an even remotely-complete list.

Holy shit that list is insane. A lot of those words being banned would limit you enormously if you're trying to create art.

But it never has been about art?

This list seems incomplete. I've had the filter triggered on words like 'thong' as in thong slippers as well.

I wonder if they keep that private to avoid people finding work arounds.

It’s perhaps not a simple list but an AI classifier, perhaps GPT-3 based.

Nuclear was apparently confirmed on the list, but I have recently used it to generate cool things around nuclear power. So suppose it is like you say.