extensionvsuserWhich spelling fits?

Which to use

“extension” and “user” are a confusable German pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#33,032
“extension” frequency rank
#2,693
“user” frequency rank
35725
confusion score

Side-by-Side Comparison

Feature extension user
Definition Ausdehnung, Erweiterung, Umfang Benutzer

Letter map: extension vs user

Shared letters muted; letters that set extension and user apart highlighted. Shared run: 1.

9 ch
extension
4 ch
user

Corpus notes: extension and user

extension and user are indexed as a confusable German pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they differ by 5 letter(s) in length. Our composite confusion score for this pair is 35725, derived from the frequency rank of both members and their visual similarity.

extension is recorded at frequency rank #33,032, classified as anoun, pronounced […]. user is at rank #2,693, tagged as anoun, pronounced […].

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 35725, this pair ranks #1,633,072 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of extension vs user

Shared letters: es. Private to "extension": inotx. Private to "user": ru.

"extension" · 9 letters · shape VCCVCCVVC  ·  "user" · 4 letters · shape VCVC

Known mistypes of this pair

  • extensionetxension · exetnsion · extenison · extennsion · extensino · extensionn · extensoin · extenssion
  • usersuer · uesr · userr · usre · usser

Frequently Asked Questions

Can "extension" and "user" be used interchangeably?
No. They differ by 5 letter(s) in length, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.
Which is more common, "extension" or "user"?
"user" is the more common of the two: it sits at frequency rank #2,693 in our German list, against #33,032 for "extension". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

You've compared "extension" and "user". Here's where to go from here.

  • Full dictionary entry for "extension" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "user" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,633,072 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "extension" and "user" also get mixed up with nearby pairs, the highest-scored neighbour is "extension vs puzzles". 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 #1,633,072 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list