virulent
/ˈvɪɹ(j)ʊl(ə)nt/
"virulent" is a 8-letter English headword indexed on PlainSpell.
The verdict
“virulent” is a moderately-common English word, ranked #33,904 in English word frequency and used as an adjective.
- #33,904
- frequency rank, English
- 8
- letters
- 12
- tracked misspellings
- 2
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Of animals, plants, or substances: extremely venomous or poisonous.
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 | virulent |
| Language | English |
| Part of speech | Adjective |
| IPA | /ˈvɪɹ(j)ʊl(ə)nt/ |
| Letters | 8 |
| Frequency rank | #33,904 |
| Misspellings tracked | 12 |
| Confusable pairs | 2 |
| Source | Wiktionary (kaikki.org) |
Where “virulent” sits in English frequency
Spelling & Dictionary Insight
The English entry for virulent is 8 letters long, classified as an adjective, and transcribed in the International Phonetic Alphabet as /ˈvɪɹ(j)ʊl(ə)nt/. Corpus data places it at rank #33,904 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 12 likely wrong-spelling variants for virulent, with forms such as "ivrulent", "virluent", and "virrulent". 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 2 confusable-pair relationships, "violent", "virulence", a pairing that trips writers up because the two words share enough sound or shape to blur together.
Etymologically, the entry records: PIE word *wisós From Middle English virulent (“leaking or seeping pus, purulent; (of putrefaction) extremely severe (sense uncertain)”) [and other forms], borrowed from Latin vīrulentus (“poisonous”), from vīrus (“poison; venom; slime, slimy liquid; stinki… The correct English form is virulent, spelled V-I-R-U-L-E-N-T.
Definition
- 1Of animals, plants, or substances: extremely venomous or poisonous.
- 2Extremely hostile or malicious; intensely acrimonious.
- 3Of a disease or disease-causing agent: malignant, able to cause damage to the host.
- 4Of a pathogen: replicating within its host cell, then immediately causing it to undergo lysis.
Etymology
PIE word *wisós From Middle English virulent (“leaking or seeping pus, purulent; (of putrefaction) extremely severe (sense uncertain)”) [and other forms], borrowed from Latin vīrulentus (“poisonous”), from vīrus (“poison; venom; slime, slimy liquid; stinking smell; nasty taste”) (ultimately from Proto-Indo-European *wisós (“poison; slime; fluidity”)) + -ulentus (suffix meaning ‘abounding in, full of’, forming adjectives). Sense 4 (“of a pathogen: replicating within its host cell, then immediately causing it to undergo lysis”) is derived from French virulent, which was first used in this sense by the French biologist François Jacob (1920–2013) and his co-authors in a 1953 article.
This word in other languages
Common misspellings
Also misspelled as: ivrulent,virluent,virrulent,viruelnt,virulennt,virulentt,viruletn,virullent,virulnet,viurlent,vriulent,vvirulent
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of virulent - 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 “virulent”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is V-I-R-U-L-E-N-T - every other letter order is a misspelling in standard orthography.
- Say it as /ˈvɪɹ(j)ʊl(ə)nt/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Don't mix it up with “violent” - see the side-by-side comparison. virulent vs violent
- 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.