openvspaterTell them apart

Quick tell: open is a adjective, pater is a noun, so they fill different roles in a sentence.

Which to use

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

#2,607
“open” frequency rank
#8,439
“pater” frequency rank
11046
confusion score

Side-by-Side Comparison

Feature open pater
Definition etwas ist nicht geschlossen der Vater

Letter map: open vs pater

Shared letters muted; letters that set open and pater apart highlighted. Shared run: 2. open runs 4 letters (VCVC) against pater's 5 (CVCVC) - the length gap alone is often enough to separate them once you know to check it.

4 ch
open
5 ch
pater

Part-of-speech tell for open / pater

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: open is anadjective and pateranoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 11046, derived from the frequency rank of both members and their visual similarity.

open is recorded at frequency rank #2,607, classified as anadj, pronounced […]. pater is at rank #8,439, 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 11046, this pair ranks #1,971,970 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of open vs pater

Shared letters: ep. Private to "open": no. Private to "pater": art.

"open" · 4 letters · shape VCVC  ·  "pater" · 5 letters · shape CVCVC

Known mistypes of this pair

  • openoepn · openn · opne · oppen · poen
  • paterapter · paetr · paterr · patre · patter · ppater · ptaer

Frequently Asked Questions

Is swapping "open" for "pater" ever safe?
No - they are not even the same part of speech. "open" is an adjective and "pater" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary German text, does "open" or "pater" show up more?
"open" is the more common of the two: it sits at frequency rank #2,607 in our German list, against #8,439 for "pater". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pair "open" vs "pater" is on the table, pick a follow-up below.

  • Full dictionary entry for "open" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "pater" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,971,970 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "open" and "pater" also get mixed up with nearby pairs, the highest-scored neighbour is "pater 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 #1,971,970 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