insulate
/ˈɪnsjʊleɪt/
"insulate" is a 8-letter English headword indexed on PlainSpell.
The verdict
“insulate” is a moderately-common English word, ranked #35,784 in English word frequency and used as a verb.
- #35,784
- frequency rank, English
- 8
- letters
- 11
- tracked misspellings
- 8
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - To separate, detach, or isolate.
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 | insulate |
| Language | English |
| Part of speech | Verb |
| IPA | /ˈɪnsjʊleɪt/ |
| Letters | 8 |
| Frequency rank | #35,784 |
| Misspellings tracked | 11 |
| Confusable pairs | 8 |
| Source | Wiktionary (kaikki.org) |
Where “insulate” sits in English frequency
Spelling & Dictionary Insight
The English entry for insulate is 8 letters long, classified as a verb, and transcribed in the International Phonetic Alphabet as /ˈɪnsjʊleɪt/. Corpus data places it at rank #35,784 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 2 distinct senses for this headword, so context determines which meaning a reader should apply.
Our generated misspelling index lists 11 likely wrong-spelling variants for insulate, with forms such as "innsulate", "insluate", and "inssulate". Each variant is a distinct typo pattern an edit-distance generator flags, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution. It also participates in 8 confusable-pair relationships, "insult", "isolate", "insults", and more, a pairing that trips writers up because the two words share enough sound or shape to blur together.
Etymologically, the entry records: From Latin īnsula (“isle, island”) + -ate (verb-forming suffix) or from Late Latin īnsulātus (“made an island”), see etymology at -ate. First attested in the 16th century; the general verb īnsulō (“insulate”) is attested only in New Latin and postdates the … The correct English form is insulate, spelled I-N-S-U-L-A-T-E.
Definition
- 1To separate, detach, or isolate.
- 2To separate a body or material from others, e.g. by non-conductors to prevent the transfer of electricity, heat, etc.
Etymology
From Latin īnsula (“isle, island”) + -ate (verb-forming suffix) or from Late Latin īnsulātus (“made an island”), see etymology at -ate. First attested in the 16th century; the general verb īnsulō (“insulate”) is attested only in New Latin and postdates the English term, but influence from an otherwise unattested Medieval Latin counterpart cannot be ruled out. Piecewise doublet of isolate.
Synonyms
This word in other languages
Common misspellings
Also misspelled as: innsulate,insluate,inssulate,insualte,insulaet,insulatte,insullate,insultae,inuslate,isnulate,nisulate
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of insulate - 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.
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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Using “insulate”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is I-N-S-U-L-A-T-E - every other letter order is a misspelling in standard orthography.
- Say it as /ˈɪnsjʊleɪt/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Don't mix it up with “insult” - see the side-by-side comparison. insulate vs insult
- Browse more English words and confusable pairs in the same reference. English 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.