ISIL
/ˈaɪsəl/
"isil" is a 4-letter English headword indexed on PlainSpell.
The verdict
“ISIL” has 5 generated spelling variants in the English index at frequency #18,597. The variants make it a useful spelling check.
- #18,597
- frequency rank, English
- 2,140
- “I” headwords
- 5
- tracked misspellings
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Synonym of ISIS.
Corpus desk
Index EN-isil · ISIL · English
ISIL · rank #18,597 · 5 variants · 20 confusables
- FREQ-MID #18,597
- LEN-MID 4 letters
- VOW-2 2 vowels
- CONFUS-HIGH 20 pairs
- VAR-MID 5 variants
- BOOK-MID 2,140
- PHOTO-FINISH involuntary
Nearest frequency peer: involuntary (-1 rank slots)
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.
Rank peers near misspelling magnet “ISIL”
Same rarity band: useful when a typo lands on a peer headword
- interstellar
interstellar
81,407 corpus weight
- intoxicated
intoxicated
81,406 corpus weight
- involuntary
involuntary
81,405 corpus weight
- ISIL
ISIL
81,404 corpus weight
- issuance
issuance
81,403 corpus weight
- itchy
itchy
81,402 corpus weight
What this shows “ISIL” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.
Visual similarity to commonly confused words
How many letter changes separate each confused pair (Levenshtein distance, normalized).
Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).
| Property | Value |
|---|---|
| Headword | ISIL |
| Language | English |
| Part of speech | Proper noun |
| IPA | /ˈaɪsəl/ |
| Letters | 4 |
| Frequency rank | #18,597 |
| Misspellings tracked | 5 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Frequency seat of misspelling magnet “ISIL”
A misspelling magnet
The generator records 5 spelling variants around ISIL (IPA /ˈaɪsəl/), aproper noun. Corpus frequency is #18,597 among 2,140 “I” headwords. Dominant gloss: "Synonym of ISIS.".
Our generated misspelling index lists 5 likely wrong-spelling variants for ISIL, with forms such as "iisl", "isill", and "isli". 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, "iso", "ISS", "ISP", and more, where similar look or sound leads writers to substitute one word for another in context.
Etymologically, the entry records: An acronym of one English translation of one of the group's Arabic-language names, الدَّوْلَة الْإِسْلَامِيَّة فِي الْعِرَاق وَالشَّام (ad-dawla l-ʔislāmiyya fī l-ʕirāq wa-š-šām, literally “the Islamic State in Iraq and the Levant”). Compare ISIS, which tra… The correct English form is ISIL, spelled I-S-I-L.
Definition
- 1Synonym of ISIS.
Etymology
An acronym of one English translation of one of the group's Arabic-language names, الدَّوْلَة الْإِسْلَامِيَّة فِي الْعِرَاق وَالشَّام (ad-dawla l-ʔislāmiyya fī l-ʕirāq wa-š-šām, literally “the Islamic State in Iraq and the Levant”). Compare ISIS, which translates الشَّام (aš-šām) as “Syria” rather than “the Levant”.
Common misspellings
Also misspelled as:
- iisl
- isill
- isli
- issil
- siil
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of ISIL - expressed in single-character edits (insert, delete, or swap one letter). Bigger bars stand out at a glance; a one-edit slip is the hardest to catch.
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 English corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "ISIL", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 4 letters (nearest by frequency rank).
Similar misspelling depth
Headwords with a similar count of attested misspellings (5 here; floor ≥5).