The rule for these types of words is that we double the last letter before we add the suffix. So, if you’ve a rabbit called Hoppy this rule helps you to remember that Hoppy is spelt with two p’s!

Yee from Hong Kong writes: I'm not sure how the suffix -ness works. Can we add -ness to all types of words to make nouns? Thanks for your answer.

Pull the list down corresponding to the entries for which you need the suffix. Hit Enter when done, and it will add the prefix to every entry in the intended column. We can use two functions to ...