The Doubling Rule
When do you double the last consonant in a one syllable word when adding a suffix?
Look at the base word.
- Does the base word end with a vowel – consonant (ie sad, drop and fit)?
- Does the suffix start with a vowel?
If your answer is yes to both questions, then you double the consonant before adding the suffix.
(ie sadden, dropping and fittest)
Introduction to the Concept