viper
/ˈvaɪpɚ/
"viper" is a 5-letter English headword indexed on PlainSpell.
The verdict
“viper” is a moderately-common English word, ranked #19,500 in English word frequency and used as a noun.
- #19,500
- frequency rank, English
- 5
- letters
- 7
- tracked misspellings
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A venomous snake in the family Viperidae.
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 | viper |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈvaɪpɚ/ |
| Letters | 5 |
| Frequency rank | #19,500 |
| Misspellings tracked | 7 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Where “viper” sits in English frequency
Spelling & Dictionary Insight
The English entry for viper is 5 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ˈvaɪpɚ/. Corpus data places it at rank #19,500 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 4 distinct senses for this headword, so context determines which meaning a reader should apply.
Our generated misspelling index lists 7 likely wrong-spelling variants for viper, with forms such as "ivper", "viepr", and "viperr". 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 20 confusable-pair relationships, "vive", "vise", "voter", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.
Etymologically, the entry records: From Middle French vipere, from Old French vipre, from Latin vīpera, contracted from vīvipara f (“viviparous”, adj.), from vīvus (“alive”, adj.) + parere (“to bear”, verb). Doublet of weever and wyvern. The correct English form is viper, spelled V-I-P-E-R.
Definition
- 1A venomous snake in the family Viperidae.
- 2Any venomous snake.
- 3A dangerous, treacherous, or malignant person.
- 4A person who smokes marijuana.
Etymology
From Middle French vipere, from Old French vipre, from Latin vīpera, contracted from vīvipara f (“viviparous”, adj.), from vīvus (“alive”, adj.) + parere (“to bear”, verb). Doublet of weever and wyvern.
This word in other languages
Common misspellings
Also misspelled as: ivper,viepr,viperr,vipper,vipre,vpier,vviper
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of viper - 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 “viper”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is V-I-P-E-R - every other letter order is a misspelling in standard orthography.
- Say it as /ˈvaɪpɚ/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Don't mix it up with “vive” - see the side-by-side comparison. viper vs vive
- 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.