What does shiferly mean?

"Shiferly" is not a recognized word in the English language. It's possible you've made a typo or it could be a slang term or regional dialect word.

To help me understand what you mean, please provide more context:

* What is the sentence or phrase where you encountered this word?

* What is the topic or subject you are discussing?

* Do you have any other information about the word, like its origin or intended meaning?

Once you give me more context, I can try to figure out what you're asking!