What is the worst cuss word spelled backwards?

This is a bit of a trick question! There isn't really a "worst" cuss word, as what's considered offensive varies from person to person and culture to culture.

However, the concept of spelling a cuss word backward is interesting. Let's think about a common cuss word like "damn." Spelled backward, it's "nmad." While it's not a real word, it doesn't carry the same offensive impact as the original word.

So, the answer is really subjective. It depends on what you consider to be a "bad" word and what the backward spelling sounds like.