ISIS

abbrev

The verdict

“ISIS” is a regularly-used German word, ranked #7,491 in German word frequency and used as an abbreviation.

#7,491
frequency rank, German
4
letters
5
tracked misspellings
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Abkürzung für die Terrorgruppe „Islamischer Staat im Irak und Syrien“ bzw. „Islamischer Staat im Irak und in Syrien“ bzw. „Islamischer Staat im Irak und in (Groß-)Syrien“

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

ISIS vs ist
0% similar
ISIS vs iss
0% similar
ISIS vs ISO
50% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for ISIS
PropertyValue
HeadwordISIS
LanguageGerman
Part of speechAbbreviation
Letters4
Frequency rank#7,491
Misspellings tracked5
Confusable pairs20
SourceWiktionary (kaikki.org)

Where “ISIS” sits in German frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). ISIS lands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Spelling & Dictionary Insight

The German entry for ISIS is 4 letters long, classified as an abbreviation. Corpus data places it at rank #7,491 in overall German word frequency, indicating it appears regularly in written and spoken text. The dominant gloss from Wiktionary reads: "Abkürzung für die Terrorgruppe „Islamischer Staat im Irak und Syrien“ bzw. „Islamischer Staat im Irak und in Syrien“ bzw. „Islamischer Staat im Irak und in (Groß-)Syrien“".

Our generated misspelling index lists 5 likely wrong-spelling variants for ISIS, with forms such as "iiss", "isiss", and "issi". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. It also participates in 20 confusable-pair relationships, "ist", "iss", "ISO", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.

No borrowing history is documented for this entry, so spelling patterns must be inferred from the word's phoneme-to-grapheme mapping rather than from a documented borrowing chain. The correct German form is ISIS, spelled I-S-I-S.

Definition

  1. 1
    Abkürzung für die Terrorgruppe „Islamischer Staat im Irak und Syrien“ bzw. „Islamischer Staat im Irak und in Syrien“ bzw. „Islamischer Staat im Irak und in (Groß-)Syrien“

Synonyms

ISIGIsigISILIsilIsis

This word in other languages

Common misspellings

Also misspelled as: iiss,isiss,issi,issis,siis

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of ISIS - counted as single-character edits (an insertion, a deletion, or a substituted letter). The larger the bar, the easier the typo is to spot; one-edit slips are the ones that sneak past readers.

iiss2isiss1issi2issis1siis2
Edit distance from "ISIS"

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

How do you spell "ISIS"?
"ISIS" is spelled I-S-I-S.
What does "ISIS" mean?
As an abbreviation, "ISIS" means: Abkürzung für die Terrorgruppe „Islamischer Staat im Irak und Syrien“ bzw. „Islamischer Staat im Irak und in Syrien“ bzw. „Islamischer Staat im Irak und in (Groß-)Syrien“
What words are commonly confused with "ISIS"?
"ISIS" is commonly confused with "ist", "iss", "ISO". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
What language does "ISIS" come from?
"ISIS" is a German word. You can look up definitions, pronunciations, and spelling data for this and other words across English, Spanish, Portuguese, French, and German on PlainSpell.
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.

Using “ISIS”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct German spelling is I-S-I-S - every other letter order is a misspelling in standard orthography.
  • Don't mix it up with “ist” - see the side-by-side comparison. ISIS vs ist
  • Browse more German words and confusable pairs in the same reference. German words
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.

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

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list