Isar

name

"isar" is a 4-letter English headword indexed on PlainSpell.

The verdict

“Isar” is uncommon English (outside the top frequency list), classed as a proper noun. The kind of spelling people second-guess.

Unranked
below top-frequency English
4
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A river in Tyrol, Austria and Bavaria, Germany, a tributary of the Danube.

Corpus desk

Index EN-isar · Isar · English

Isar · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MID 4 letters
  • VOW-2 2 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "I" thin
  • PHOTO-UNK Peer pending

Read with this headword: Spelling guide for this pattern

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.

Key facts for Isar
PropertyValue
HeadwordIsar
LanguageEnglish
Part of speechProper noun
Letters4
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “Isar” in English

Isarsits beyond the 100,000 most-frequent English words, in the long tail of technical, archaic, or otherwise rare vocabulary where spelling doubt tends to strike hardest.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

Isar is uncommon English outside the top frequency list, classed as aproper noun. Rarity is why readers land here mid-draft. Gloss: "A river in Tyrol, Austria and Bavaria, Germany, a tributary of the Danube.".

No generated misspelling entries exist for Isar in our index, since its letter pattern doesn't lend itself to common typo substitutions. This entry stands alone in our confusable dataset, since nothing in our dataset looks or sounds close enough to cause mix-ups.

Etymologically, the entry records: From German Isar. The correct English form is Isar, spelled I-S-A-R.

Definition

  1. 1
    A river in Tyrol, Austria and Bavaria, Germany, a tributary of the Danube.

Etymology

From German Isar.

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). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "Isar"?
"Isar" is spelled I-S-A-R.
What does "Isar" mean?
As a proper noun, "Isar" means: A river in Tyrol, Austria and Bavaria, Germany, a tributary of the Danube.
What is the origin of the word "Isar"?
From German Isar. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

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

Source: FrequencyWords open word-frequency list