refluxvsrelaxWhich spelling fits?

Quick tell: reflux is a noun, relax is an adjective, so they fill different roles in a sentence.

Which to use

“reflux” is a noun and “relax” is an adjective - they look or sound alike but fill different roles in a sentence.

#27,216
“reflux” frequency rank
#18,039
“relax” frequency rank
45255
confusion score

Side-by-Side Comparison

Feature reflux relax
Definition Mouvement réglé de la mer qui se retire du rivage après le flux. Détendu, relaxant.

Where the eye mixes reflux and relax

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.

6 ch
reflux
5 ch
relax

Look-alike desk: reflux vs relax

These two trip readers on the page rather than in the ear: reflux is \ʁə.fly\ while relax is \ʁə.laks\. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 45255, derived from the frequency rank of both members and their visual similarity.

reflux is recorded at frequency rank #27,216, classified as anoun, pronounced \ʁə.fly\. relax is at rank #18,039, tagged as anadj, pronounced \ʁə.laks\.

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 45255, this pair ranks #204,159 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of reflux vs relax

Shared letters: elrx. Private to "reflux": fu. Private to "relax": a.

"reflux" · 6 letters · shape CVCCVC  ·  "relax" · 5 letters · shape CVCVC

Known mistypes of this pair

  • refluxerflux · refflux · refllux · refluxx · reflxu · refulx · relfux · rfelux
  • relaxerlax · realx · relaxx · rellax · relxa · rleax · rrelax

Frequently Asked Questions

Can "reflux" and "relax" be used interchangeably?
No - they are not even the same part of speech. "reflux" is a noun and "relax" an adjective, so a sentence built for one is usually ungrammatical with the other.
In ordinary French text, does "reflux" or "relax" show up more?
"relax" is the more common of the two: it sits at frequency rank #18,039 in our French list, against #27,216 for "reflux". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "reflux" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "relax" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #204,159 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "reflux" and "relax" also get mixed up with nearby pairs, the highest-scored neighbour is "reflux vs rénaux". 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 #204,159 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list