tuervstumeurWhat's the difference?

Quick tell: tuer is a verb, tumeur is a noun, so they fill different roles in a sentence.

Which to use

“tuer” is a verb and “tumeur” is a noun - they look or sound alike but fill different roles in a sentence.

#1,426
“tuer” frequency rank
#9,405
“tumeur” frequency rank
10831
confusion score

Side-by-Side Comparison

Feature tuer tumeur
Definition Ôter la vie d’une manière violente ; ne se dit pas quand il s’agit d'une euthanasie, ni à la forme pronominale dans le cas d’une mort accidentelle par noyade, étouffement ou empoisonnement : on emploie alors se noyer, s’étouffer, s’empoisonner. Éminence, grosseur plus ou moins considérable, développée dans quelque partie du corps, soit par une maladie, soit par une autre cause.

Where the eye mixes tuer and tumeur

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. tuer runs 4 letters (CVVC) against tumeur's 6 (CVCVVC) - the length gap alone is often enough to separate them once you know to check it.

4 ch
tuer
6 ch
tumeur

Visual trap between tuer and tumeur

These two trip readers on the page rather than in the ear: tuer is \tɥe\ while tumeur is \ty.mœʁ\. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 10831, derived from the frequency rank of both members and their visual similarity.

tuer is recorded at frequency rank #1,426, classified as averb, pronounced \tɥe\. tumeur is at rank #9,405, tagged as anoun, pronounced \ty.mœʁ\.

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 10831, this pair ranks #411,510 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of tuer vs tumeur

Shared letters: ertu. Private to "tuer": -. Private to "tumeur": m.

"tuer" · 4 letters · shape CVVC  ·  "tumeur" · 6 letters · shape CVCVVC

Known mistypes of this pair

  • tuerteur · ttuer · tuerr · ture · uter
  • tumeurtmueur · ttumeur · tuemur · tumeru · tumeurr · tummeur · tumuer · utmeur

Frequently Asked Questions

Is swapping "tuer" for "tumeur" ever safe?
No - they are not even the same part of speech. "tuer" is a verb and "tumeur" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "tuer" vs "tumeur" - which ranks higher?
"tuer" is the more common of the two: it sits at frequency rank #1,426 in our French list, against #9,405 for "tumeur". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "tuer" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "tumeur" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #411,510 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "tuer" and "tumeur" also get mixed up with nearby pairs, the highest-scored neighbour is "tuer vs turf". 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 #411,510 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