undiseased

adj

"undiseased" is a 10-letter English headword indexed on PlainSpell.

The verdict

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

Unranked
below top-frequency English
10
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Not diseased.

Corpus desk

Index EN-undiseased · undiseased · English

undiseased · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 10 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 undiseased
PropertyValue
Headwordundiseased
LanguageEnglish
Part of speechAdjective
Letters10
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “undiseased” in English

undiseasedsits beyond the 100,000 most-frequent English words, in the long tail of technical, archaic, or otherwise rare vocabulary where spelling doubt tends to strike hardest.

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

Rare enough to double-check

undiseased is uncommon English outside the top frequency list, classed as anadjective. Rarity is why readers land here mid-draft. Gloss: "Not diseased.".

Our edit-distance generator produced no likely misspellings for undiseased, which points to an orthography that plays by predictable English rules. This headword has no recorded confusable partner, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.

Etymologically, the entry records: From un- + diseased. The correct English form is undiseased, spelled U-N-D-I-S-E-A-S-E-D.

Definition

  1. 1
    Not diseased.

Recorded use

Wiktionary examples

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

  1. He was a contemplative, rather stout gentleman, of excellent digestion--of quiet perceptions, undiseased by hypothesis, happy in his inability to know the causes of things, preferring the things themselves.
  2. But loveliness of colour, perfectness of form, endlessness of change, wonderfulness of structure, are precious to all undiseased human minds; and the superiority of the mountains in all these things to the lowland is, I repeat, as measurable as the richness of a painted window matched with a white one, or the wealth of a museum compared with that of a sim…

Etymology

From un- + diseased.

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 "undiseased"?
"undiseased" is spelled U-N-D-I-S-E-A-S-E-D.
What does "undiseased" mean?
As an adjective, "undiseased" means: Not diseased.
What is the origin of the word "undiseased"?
From un- + diseased. 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