My preference is that you stop baking and go outside. Here are some further examples of adding suffixes -ed and -ing to words ending in 'fer'. Notice how the letter 'r' is doubled in the new word.

The rules for regular plural nouns are: Just add an ‘s’ Add an 'es' Drop the ‘y’ and add ‘ies­’ Replace the ‘f’ or ‘fe ... is that words ending with a ‘hissing ...