viperous

adj

"viperous" is a 8-letter English headword indexed on PlainSpell.

The verdict

“viperous” is uncommon English (outside the top frequency list), classed as an adjective. The kind of spelling people second-guess.

Unranked
below top-frequency English
8
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - of or pertaining to a viper

Corpus desk

Index EN-viperous · viperous · English

viperous · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-LONG 8 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "V" thin
  • PHOTO-UNK Peer pending

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.

Key facts for viperous
PropertyValue
Headwordviperous
LanguageEnglish
Part of speechAdjective
Letters8
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “viperous” in English

viperousranks outside the top 100,000 English headwords, in the long tail of specialist, archaic, or seldom-used vocabulary, exactly the territory where a reader stops mid-sentence to double-check spelling.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

viperous is uncommon English outside the top frequency list, classed as anadjective. Rarity is why readers land here mid-draft. 2 senses are on record.

Our edit-distance generator produced no likely misspellings for viperous, and the word's spelling is regular enough that our generator found nothing worth flagging. This headword has no recorded confusable partner, since its spelling is unusual enough that it doesn't cluster with a lookalike.

Etymologically, the entry records: From viper + -ous. The correct English form is viperous, spelled V-I-P-E-R-O-U-S.

Definition

  1. 1
    of or pertaining to a viper
  2. 2
    venomous, malicious or treacherous

Recorded use

Wiktionary examples

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

  1. viperous as the suicide foam of captive Judas (iii)
  2. Back home the portrait of Trujillo, which every good citizen had hanging in his house, beamed down on him with insipid, viperous benevolence.

Etymology

From viper + -ous.

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "viperous"?
"viperous" is spelled V-I-P-E-R-O-U-S.
What does "viperous" mean?
As an adjective, "viperous" means: of or pertaining to a viper
What is the origin of the word "viperous"?
From viper + -ous. 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.

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

Source: FrequencyWords open word-frequency list