Swelled vs. Swollen
Use “swelled” for the simple past. In perfect or passive-style participial uses, both “swelled” and “swollen” are recorded, while “swollen” is especially familiar for an enlarged state. Do not use “swollen” as the ordinary simple-past form: the dictionary inflection distinguishes simple past “swelled” from the participial alternatives.
Use “swelled” for the simple past. In perfect or passive-style participial uses, both “swelled” and “swollen” are recorded, while “swollen” is especially familiar for an enlarged state.
Key details
Choose the right form
| Grammar / meaning | Use | Decision |
|---|---|---|
| simple past of swell | swelled | Use the finite past form. |
| past participle in perfect/passive-style use | swelled or swollen, where the recorded inflection permits either | Follow the documented participial alternatives and normal idiom. |
| an enlarged or distended state used adjectivally | swollen | Use the familiar participial/adjectival form for the state. |
Quick tests
Verb-form test
Is the form the simple past with no auxiliary such as have/has/had?
If yes: Use “swelled.”
If no: For a participle, the reviewed inflection records both “swelled” and “swollen”; for an enlarged state, “swollen” is especially familiar.
Caveat: Do not use “swollen” as the ordinary simple-past form merely because it is common as a participle or adjective.
Examples
The river swelled after several hours of rain.
“Swelled” is the simple past.
The stream has swollen since yesterday.
“Swollen” functions as the past participle after “has.”
His ankle was visibly swollen by evening.
“Swollen” describes the enlarged state.
Further guidance
Core difference
Use “swelled” for the simple past. In perfect or passive-style participial uses, both “swelled” and “swollen” are recorded, while “swollen” is especially familiar for an enlarged state.
Fast Test
For a simple past event, choose “swelled.” For a participle, check the construction and intended idiom rather than forcing one form everywhere.
Usage Boundary
Do not use “swollen” as the ordinary simple-past form: the dictionary inflection distinguishes simple past “swelled” from the participial alternatives.
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
- Swell — Merriam-Webster (opens in a new tab)Merriam-Webster · Dictionary evidence that swell has past swelled and past participles swelled or swollen.