insulin

/ˈɪnsjʊlin/

//ˈɪnsjʊlin// noun

By · According to Wiktionary data (CC BY-SA) ·

"insulin" is a 7-letter English headword indexed on PlainSpell.

The verdict

“insulin” has 10 generated spelling variants in the English index at frequency #9,485. The variants make it a useful spelling check.

#9,485
frequency rank, English
2,140
“I” headwords
10
tracked misspellings
4
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A polypeptide hormone that regulates carbohydrate metabolism (in various animals including humans).

Corpus desk

Index EN-insulin · insulin · English

insulin · rank #9,485 · 10 variants · 4 confusables

  • FREQ-COMMON #9,485
  • LEN-LONG 7 letters
  • VOW-3 3 vowels
  • CONFUS-MID 4 pairs
  • VAR-MID 10 variants
  • BOOK-MID 2,140
  • PHOTO-FINISH inquiries

Nearest frequency peer: inquiries (-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 “insulin”

Same rarity band: useful when a typo lands on a peer headword

corpus weight

What this shows “insulin” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

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

insulin vs insult
71% similar
insulin vs insults
71% similar
insulin vs insulting
78% similar

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

Key facts for insulin
PropertyValue
Headwordinsulin
LanguageEnglish
Part of speechNoun
IPA/ˈɪnsjʊlin/
Letters7
Frequency rank#9,485
Misspellings tracked10
Confusable pairs4
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “insulin”

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

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

Ticks step logarithmically, so each one marks a roughly tenfold drop in how often the word turns up. Same rarity band neighbours include “inquiries” (#9,484), “interpret” (#9,486), “injustice” (#9,483). Among 2,140 “I” headwords, “insulin” is #9,485. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 10 spelling variants around insulin (IPA /ˈɪnsjʊlin/), anoun. Corpus frequency is #9,485 among 2,140 “I” headwords. Wiktionary lists 3 senses, so context still picks the gloss.

Our generated misspelling index lists 10 likely wrong-spelling variants for insulin, with forms such as "innsulin", "insluin", and "inssulin". Every one of these variants traces to a single-character edit -- an added or dropped letter, a swapped consonant, or a vowel swap -- the kind of slip a spell-checker is built to catch. It also participates in 4 confusable-pair relationships, "insult", "insults", "insulting", and more, where similar look or sound leads writers to substitute one word for another in context.

Etymologically, the entry records: From Latin īnsula (“island”) (named for the islets of Langerhans, where insulin is produced) + -in. The correct English form is insulin, spelled I-N-S-U-L-I-N.

Definition

  1. 1
    A polypeptide hormone that regulates carbohydrate metabolism (in various animals including humans).
  2. 2
    Any exogenous preparation of this hormone for use as a medication.
  3. 3
    Any exogenous preparation of this hormone or its analogues for use as a medication.

Recorded use

Wiktionary examples

These source excerpts show how insulin appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. Mommy said that Grandma's diabetes happened because her body stopped making its own insulin.
  2. Ask a dozen persons to tell you what they know about insulin and you will get some surprising and contradictory answers. The truth is this: Insulin is not a cure for diabetes, but it is helping to prolong and gladden lives.

Etymology

From Latin īnsula (“island”) (named for the islets of Langerhans, where insulin is produced) + -in.

This word in other languages

insulina(Español)insuline(Français)Insulin(Deutsch)insulina(Português)

Common misspellings

Also misspelled as:

  • innsulin
  • insluin
  • inssulin
  • insuiln
  • insulinn
  • insullin
  • insulni
  • inuslin
  • isnulin
  • nisulin

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of insulin - 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.

innsulin1insluin2inssulin1insuiln2insulinn1insullin1insulni2inuslin2
Edit distance from "insulin"

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

How do you spell "insulin"?
"insulin" is spelled I-N-S-U-L-I-N. The IPA pronunciation is /ˈɪnsjʊlin/.
What does "insulin" mean?
As a noun, "insulin" means: A polypeptide hormone that regulates carbohydrate metabolism (in various animals including humans).
What words are commonly confused with "insulin"?
"insulin" is commonly confused with "insult", "insults", "insulting". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "insulin"?
The IPA (International Phonetic Alphabet) transcription for "insulin" is /ˈɪnsjʊlin/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "insulin"?
From Latin īnsula (“island”) (named for the islets of Langerhans, where insulin is produced) + -in. 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.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "insulin", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 7 letters (nearest by frequency rank).

Lindsay#9,492glimpse#9,475mirrors#9,499Myanmar#9,501

Similar misspelling depth

Headwords with a similar count of attested misspellings (10 here; floor ≥5).

narrator10 variantsexhaust10 variantsobesity10 variantseclipse10 variants

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

Source: FrequencyWords open word-frequency list