Clamor vs. Clamour
Cambridge labels “clamour” as UK and “clamor” as US across the related noun and verb uses. This guide treats the choice as a documented spelling convention and does not invent a meaning difference between the variants.
Use “clamor” in standard US spelling and “clamour” in standard UK spelling; keep the regional spelling consistent across noun and verb uses.
Key details
Choose the right form
| Meaning / situation | Form / construction | Decision |
|---|---|---|
| standard US spelling | clamor | Use for US-oriented copy. |
| standard UK spelling | clamour | Use for UK-oriented copy. |
Quick tests
House-style test
Is the document following US spelling conventions?
If yes: Use “clamor.”
If no: Use “clamour” for UK spelling, or follow the publication’s stated regional style.
Caveat: Do not label the other regional form incorrect when it is appropriate for the intended variety of English.
Examples
The crowd’s clamor could be heard outside.
“Clamor” matches US spelling.
The crowd’s clamour could be heard outside.
“Clamour” matches UK spelling.
Pick the regional spelling once and keep noun and verb uses consistent.
The reviewed source documents a spelling difference, not a meaning difference.
Further guidance
Core difference
Use “clamor” in standard US spelling and “clamour” in standard UK spelling; keep the regional spelling consistent across noun and verb uses.
Style Boundary
Choose the spelling that matches the audience, region, or house style, and keep that choice consistent where both forms are accepted.
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.
- Clamour — Cambridge Dictionary (opens in a new tab)Cambridge Dictionary · UK clamour and US clamor spelling distinction