If we slip (on the ice, i.e. accidentally) rather than slide on it, the final consonant is doubled when -ing is added. This is because the consonant comes at the end of the word and is preceded by ...

u followed by a consonant, such as the word hop. 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 ...