invariant
"invariant" is a 9-letter English headword indexed on PlainSpell.
The verdict
“invariant” is a moderately-common English word, ranked #27,888 in English word frequency and used as an adjective.
- #27,888
- frequency rank, English
- 9
- letters
- 13
- tracked misspellings
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Not varying; constant.
| Property | Value |
|---|---|
| Headword | invariant |
| Language | English |
| Part of speech | Adjective |
| Letters | 9 |
| Frequency rank | #27,888 |
| Misspellings tracked | 13 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “invariant” sits in English frequency
Spelling & Dictionary Insight
The English entry for invariant is 9 letters long, classified as an adjective. Corpus data places it at rank #27,888 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 3 distinct senses for this headword, so context determines which meaning a reader should apply.
Our generated misspelling index lists 13 likely wrong-spelling variants for invariant, with forms such as "inavriant", "innvariant", and "invairant". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. We don't track a confusable pairing for this entry, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.
Etymologically, the entry records: From in- + variant. The correct English form is invariant, spelled I-N-V-A-R-I-A-N-T.
Definition
- 1Not varying; constant.
- 2Unaffected by a specified operation, especially by a transformation.
- 3Neither covariant nor contravariant.
Etymology
From in- + variant.
This word in other languages
Common misspellings
Also misspelled as: inavriant,innvariant,invairant,invaraint,invariannt,invariantt,invariatn,invarinat,invarriant,invraiant,invvariant,ivnariant,nivariant
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of invariant - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.
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 “invariant”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is I-N-V-A-R-I-A-N-T - every other letter order is a misspelling in standard orthography.
- 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.