unsusceptible

adj

"unsusceptible" is a 13-letter English headword indexed on PlainSpell.

The verdict

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

Unranked
below top-frequency English
13
letters

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

Corpus desk

Index EN-unsusceptible · unsusceptible · English

unsusceptible · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 13 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 unsusceptible
PropertyValue
Headwordunsusceptible
LanguageEnglish
Part of speechAdjective
Letters13
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “unsusceptible” in English

unsusceptibleranks 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

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

unsusceptible doesn't appear in our generated misspelling index, a sign its spelling follows regular English conventions. We don't track a confusable pairing for this entry, since nothing in our dataset looks or sounds close enough to cause mix-ups.

Etymologically, the entry records: From un- + susceptible. The correct English form is unsusceptible, spelled U-N-S-U-S-C-E-P-T-I-B-L-E.

Definition

  1. 1
    Not susceptible.

Recorded use

Wiktionary examples

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

  1. Imagination, a licentious and vagrant faculty, unsusceptible of limitations, and impatient of restraint, has always endeavored to baffle the logician, to perplex the confines of distinction, and burst the enclosures of regularity.
  2. Mortals, rejoice! the very Angels quit Their mansions unsusceptible of change, Amid your pleasant bowers to sit, And through your sweet vicissitudes to range!

Etymology

From un- + susceptible.

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 "unsusceptible"?
"unsusceptible" is spelled U-N-S-U-S-C-E-P-T-I-B-L-E.
What does "unsusceptible" mean?
As an adjective, "unsusceptible" means: Not susceptible.
What is the origin of the word "unsusceptible"?
From un- + susceptible. 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