ISR
The verdict
“ISR” is uncommon German (frequency #72,574 among 1,488 “I” headwords), classed as an abbreviation. The kind of spelling people second-guess.
- #72,574
- frequency rank, German
- 1,488
- “I” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Abkürzung für Interrupt Service Routine, zu deutsch Unterbrechungsroutine
Corpus desk
Index DE-isr · ISR · German
ISR · rank #72,574 · 0 variants · 0 confusables
- FREQ-RARE #72,574
- LEN-MID 3 letters
- VOW-1 1 vowel
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 1,488
- PHOTO-FINISH ism
Nearest frequency peer: ism (-1 rank slots)
Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.
Frequency neighbourhood for “ISR”
Lower corpus rank = more everyday usage (inverted bar length for readability)
- inputs
inputs
27,433 corpus weight
- Inuit
Inuit
27,430 corpus weight
- Investition…
Investitionsvolumen
27,429 corpus weight
- ism
ism
27,428 corpus weight
- ISR
ISR
27,427 corpus weight
- jugendliches
jugendliches
27,421 corpus weight
What this shows Bars show where “ISR” sits against the nearest ranked German headwords in the FrequencyWords band, not a reprint of letter-browse containment.
| Property | Value |
|---|---|
| Headword | ISR |
| Language | German |
| Part of speech | Abbreviation |
| Letters | 3 |
| Frequency rank | #72,574 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Wo “ISR” in der deutschen Häufigkeit sitzt
Rare enough to double-check
ISR is uncommon German at frequency #72,574 among 1,488 “I” headwords, classed as anabbreviation. Rarity is why readers land here mid-draft. Gloss: "Abkürzung für Interrupt Service Routine, zu deutsch Unterbrechungsroutine".
We couldn't generate a plausible misspelling set for ISR, which points to an orthography that plays by predictable German rules. Our dataset records no confusable match here, a sign it's visually distinctive enough not to be mixed up with another word.
No borrowing history is documented for this entry, so any spelling logic here comes from how the word's sounds map to letters, not a documented origin story. The correct German form is ISR, spelled I-S-R.
Definition
- 1Abkürzung für Interrupt Service Routine, zu deutsch Unterbrechungsroutine
Recorded use
Wiktionary exampleThese source excerpts show how ISR appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Bei der Unterbrechung wird die ISR ausgeführt, die der Unterbrechungsquelle zugeordnet ist.
This word in other languages
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 German corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Similar German words by spelling shape
Same letter count and similar misspelling depth for "ISR", not the corpus desk frequency band.
Same letter count
Frequency-ranked German headwords with 3 letters (nearest by frequency rank).
What to do next
You've looked up "ISR". Here's where to go from here.
- Usage frequency rank #72,574 among German headwords in this corpus. Corpus statistics
- Browse more German words in the "I" letter cohort. I–Z browse
PlainSpell is a reference corpus, not spelling advice. Verify unusual forms in context.
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.