rumorvsrumourWhich spelling fits?

Which to use

“rumor” and “rumour” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#10,761
“rumor” frequency rank
#17,709
“rumour” frequency rank
28470
confusion score

Side-by-Side Comparison

Feature rumor rumour
Definition A statement or claim of questionable accuracy, from no known reliable source, usually spread by word of mouth. British, Canada, New Zealand, Australia, and Ireland spelling of rumor.

Same sound, different letters: rumor vs rumour

Muted letters are shared; highlighted letters are the only spelling cue when pronunciation matches. Shared run: 5 letters.

5 ch
rumor
6 ch
rumour

Ear matches; page differs - rumor and rumour

This is the hard kind. rumor and rumour are pronounced identically (/ˈɹuːmə(ɹ)/) and both work as anoun. Neither the ear nor the grammar will rescue you; only the meaning does, so the glosses below are the whole decision. They differ by 1 letter(s) in length. Our composite confusion score for this pair is 28470, derived from the frequency rank of both members and their visual similarity.

rumor is recorded at frequency rank #10,761, classified as anoun, pronounced /ˈɹuːmə(ɹ)/. rumour is at rank #17,709, tagged as anoun, pronounced /ˈɹuːmə(ɹ)/.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 28470, this pair ranks #370,826 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of rumor vs rumour

Shared letters: moru. Private to "rumor": -. Private to "rumour": -.

"rumor" · 5 letters · shape CVCVC  ·  "rumour" · 6 letters · shape CVCVVC

Known mistypes of this pair

  • rumorrmuor · rrumor · rummor · rumorr · rumro · ruomr · urmor
  • rumourrmuour · rrumour · rummour · rumoru · rumourr · rumuor · ruomur · urmour

Frequently Asked Questions

Can "rumor" and "rumour" be used interchangeably?
No. They are pronounced the same (/ˈɹuːmə(ɹ)/), which is exactly why they get swapped in writing, but the dictionary meanings above are different, and pronunciation is no guide here.
Which is more common, "rumor" or "rumour"?
"rumor" is the more common of the two: it sits at frequency rank #10,761 in our English list, against #17,709 for "rumour". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

You've separated the homophone pair "rumor" / "rumour". Follow the links when you need the full entry or a neighbour that trips the same ear.

  • Full dictionary entry for "rumor" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "rumour" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #370,826 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "rumor" and "rumour" also get mixed up with nearby pairs, the highest-scored neighbour is "rigour vs rumour". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #370,826 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list