impvsISOWhich spelling fits?

Which to use

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

#44,702
“imp” frequency rank
#8,887
“ISO” frequency rank
53589
confusion score

Side-by-Side Comparison

Feature imp ISO
Definition ein nicht mächtiges Fabelwesen von gedrungener Gestalt; meist grünlich/bräunliche Hautfarbe Internationale Organisation für Normung (International Organization for Standardization); Vereinigung von Normungsorganisationen, die internationale Normen erarbeitet

Where the eye mixes imp and ISO

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

3 ch
imp
3 ch
ISO

Look-alike desk: imp vs ISO

A purely visual mix-up. imp ([ɪmp]) and ISO ([iːsoː]) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 53589, derived from the frequency rank of both members and their visual similarity.

imp is recorded at frequency rank #44,702, classified as anoun, pronounced [ɪmp]. ISO is at rank #8,887, tagged as anoun, pronounced [iːsoː].

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 53589, this pair ranks #1,052,082 of 2,006,359 scored German confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of imp vs ISO

Shared letters: i. Private to "imp": mp. Private to "ISO": os.

"imp" · 3 letters · shape VCC  ·  "ISO" · 3 letters · shape VCV

Frequently Asked Questions

Do "imp" and "ISO" mean the same thing in a sentence?
No. They are said differently ([ɪmp] versus [iːsoː]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary German text, does "imp" or "ISO" show up more?
"ISO" is the more common of the two: it sits at frequency rank #8,887 in our German list, against #44,702 for "imp". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "imp" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ISO" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,052,082 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "imp" and "ISO" also get mixed up with nearby pairs, the highest-scored neighbour is "imp vs IMs". Nearby pair

Confusion rank #1,052,082 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