Luster vs. Lustre
Both spellings cover literal shine and related figurative senses. This is a regional spelling choice, not a difference in meaning.
“Luster” is the usual US spelling; “lustre” is the usual UK spelling. The meaning is the same, so choose the spelling that matches your audience or house style.
Key details
Choose the right form
| Meaning / context | Use | Decision |
|---|---|---|
| US English | luster | Use the standard US spelling. |
| UK English | lustre | Use the standard UK spelling. |
| mixed or international publication | follow house style | Keep one spelling convention consistently. |
Quick tests
Decision test
Is your text following a clear US or UK spelling convention?
If yes: Use “luster” for US English and “lustre” for UK English.
If no: Follow the publication’s chosen house style consistently.
Caveat: Do not label the other regional spelling incorrect merely because it differs from your house style.
Examples
The polished surface had a soft luster.
The US spelling is appropriate in US English.
The fabric retained its lustre after cleaning.
The UK spelling is appropriate in UK English.
The editor standardized lustre throughout the UK edition.
Consistency is the practical editorial decision.
Further guidance
Core difference
Use the standard US spelling.
Fast Test
Use “luster” for US English and “lustre” for UK English. Follow the publication’s chosen house style consistently.
Usage Boundary
Do not label the other regional spelling incorrect merely because it differs from your house style.
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.
- luster (opens in a new tab)Cambridge University Press · Luster is the US spelling of lustre and has the same brightness and figurative special-quality senses.
- lustre (opens in a new tab)Cambridge University Press · Lustre is the UK spelling, with US luster identified as the counterpart; the forms differ in spelling rather than meaning.