unisonous

adj

"unisonous" is a 9-letter English headword indexed on PlainSpell.

The verdict

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

Unranked
below top-frequency English
9
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Being in unison; unisonant.

Corpus desk

Index EN-unisonous · unisonous · English

unisonous · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-LONG 9 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "U" 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 unisonous
PropertyValue
Headwordunisonous
LanguageEnglish
Part of speechAdjective
Letters9
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “unisonous” in English

unisonousfalls outside the top-100,000 ranked English words, the long-tail zone of technical, archaic, or low-frequency vocabulary, exactly where readers second-guess spellings most.

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

Rare enough to double-check

unisonous is uncommon English outside the top frequency list, classed as anadjective. Rarity is why readers land here mid-draft. Gloss: "Being in unison; unisonant.".

We couldn't generate a plausible misspelling set for unisonous, a sign its spelling follows regular English conventions. No close-neighbour confusable shows up for this headword in our dataset, suggesting its spelling stands apart enough that readers rarely confuse it with something else.

Etymologically, the entry records: From unison + -ous. The correct English form is unisonous, spelled U-N-I-S-O-N-O-U-S.

Definition

  1. 1
    Being in unison; unisonant.

Recorded use

Wiktionary example

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

  1. Hitherto all the singing in the American churches had been unisonous, the melody only having been sung; but in 1720 a book of tunes in threo parts, "Cantus," "Medius" and "Basus," was published by Rev. Thomas Walter.

Etymology

From unison + -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 "unisonous"?
"unisonous" is spelled U-N-I-S-O-N-O-U-S.
What does "unisonous" mean?
As an adjective, "unisonous" means: Being in unison; unisonant.
What is the origin of the word "unisonous"?
From unison + -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