Doubling the Final Consonant
Double the last letter when the word ends in one vowel plus one consonant and the ending starts with a vowel — hop becomes hopping, but hope becomes hoping, because the doubled letter is what keeps the vowel short.
Year 2-3 / 2nd grade · usually taught with the 2nd grade word list
Practice these words
These words drill the rule and its exceptions together, which is the only way the exceptions stick. SpellCrush reads each one aloud, uses it in a sentence, and gives a hint if your child stalls.
One honest caveat. Practice is word-by-word: there is no mode yet that shows a sentence with a gap and asks which spelling fits. Everything else is the real session — each word read aloud, its picture, its definition, a hint, three attempts and instant feedback.
The rule as it is taught
When a short word ends in one vowel plus one consonant, double the consonant before adding an ending that starts with a vowel: hop becomes hopping.
How much you can trust it
Strong for short words, which is where it is taught. For longer words it only holds when the stress is on the last syllable, and the version taught in class usually leaves that part out.
The version that actually works
The full test has three parts, and all three must be true: the word ends in one consonant, that consonant has one vowel in front of it, and the last syllable is the stressed one. That third part is what the classroom version leaves out, and it is why begin becomes beginning (stress on gin) while open becomes opening (stress on o). Never double w, x or y — they are not doubled in English at all.
Words that follow the rule
- hop to hopping
- run to running
- sit to sitting
- big to bigger
- swim to swimming
- begin to beginning
- forget to forgetting
- admit to admitted
Words that break it
- open to opening (stress falls on the first syllable)
- visit to visiting
- benefit to benefiting
- snow to snowing (w is never doubled)
- box to boxing (x is never doubled)
- play to playing (y is never doubled)
- travel to traveling in US spelling, travelling in UK spelling
What to tell a child
The single most useful cue for a young child is the sound of the vowel, not the count of the letters. Short vowel, double the letter: hopping. Long vowel, leave it alone: hoping. Say both words out loud and the difference is audible.
Travel, cancel and label are not exceptions to a broken rule, they are a genuine difference between US and UK spelling. American English does not double the l because the stress is on the first syllable; British English doubles it anyway. Both are correct in their own country.
Endings that start with a consonant never trigger doubling: ship becomes shipment, not shippment.
Related pages
Adding -ed and -ing
Most words just take the ending. Only three groups change: silent e drops, consonant plus y swaps to i for -ed, and short words double the last letter.
Silent E Rule
A silent e reaches back over one consonant and makes the vowel say its name: hop becomes hope. Plus the everyday words - have, come, love - that ignore it.
Spelling Rules
Five spelling rules children can rely on, each with the exception set the classroom version leaves out - so nobody learns a rule that quietly fails.
Frequently asked
What is the doubling the final consonant rule?
When a short word ends in one vowel plus one consonant, double the consonant before adding an ending that starts with a vowel: hop becomes hopping. Double the last letter when the word ends in one vowel plus one consonant and the ending starts with a vowel — hop becomes hopping, but hope becomes hoping, because the doubled letter is what keeps the vowel short.
Does the doubling the final consonant rule always work?
Strong for short words, which is where it is taught. For longer words it only holds when the stress is on the last syllable, and the version taught in class usually leaves that part out. The exceptions worth knowing are: open to opening (stress falls on the first syllable); visit to visiting; benefit to benefiting; snow to snowing (w is never doubled); box to boxing (x is never doubled); play to playing (y is never doubled); travel to traveling in US spelling, travelling in UK spelling.
When is this taught?
Year 2-3 / 2nd grade. It is usually introduced alongside the 2nd grade spelling list, and revisited whenever a new ending is added to a word.