In Italian, Spanish and some other languages a written double consonant can be held longer. English does not work this way. rabbit has one /b/, summer has one /m/. If you stretch the consonant, you sound unnatural.
The Rule: A doubled consonant = ONE sound. Its real job is to mark the vowel before it as short (hop/hopping, din/dinner).
One sound, every time
Practice these words:
More: butter, supper, common, dollar, pretty, traffic, arrive, soccer - all single sounds.
The hidden message: short vowel
Compare hoping (one P, long O /oʊ/) with hopping (two P's, short O /ɒ/). The doubled letter does not add sound; it tells your eye the vowel is short. Same with diner vs dinner.
Exceptions
Across a word boundary or prefix you may genuinely hold the consonant longer: unnamed, bookkeeper, midday, lamppost. There two separate sounds meet. Inside a single root, though, it stays one sound.
Quick Summary
| Spelling | Sounds | Meaning |
|---|---|---|
| double consonant | ONE sound | vowel before is short |
| single consonant | one sound | vowel before is often long |
Want to train your ear and mouth on these patterns? Try our interactive pronunciation practice and hear each sound in context.