inoculate

/ɪˈnɒkjuleɪt/

//ɪˈnɒkjuleɪt// verb

By · According to Wiktionary data (CC BY-SA) ·

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

The verdict

“inoculate” is uncommon English (frequency #69,955 among 2,140 “I” headwords), classed as a verb. The kind of spelling people second-guess.

#69,955
frequency rank, English
2,140
“I” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - To introduce an antigenic substance or vaccine into something (e.g. the body) or someone, such as to produce immunity to a specific disease.

Corpus desk

Index EN-inoculate · inoculate · English

inoculate · rank #69,955 · 0 variants · 0 confusables

  • FREQ-RARE #69,955
  • LEN-LONG 9 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 2,140
  • PHOTO-FINISH insistently

Nearest frequency peer: insistently (+1 rank slots)

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.

Long-tail ranks near “inoculate”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “inoculate” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for inoculate
PropertyValue
Headwordinoculate
LanguageEnglish
Part of speechVerb
IPA/ɪˈnɒkjuleɪt/
Letters9
Frequency rank#69,955
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “inoculate” in English

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right).inoculatefalls in this rarity band:

#1#100#1K#10K#100K
← used constantlyrarely used →

Ticks step logarithmically, so each one marks a roughly tenfold drop in how often the word turns up. Rare peers in the same band: “insistently” (#69,956), “infeasible” (#69,953), “insula” (#69,957). Among 2,140 “I” headwords, “inoculate” is #69,955. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

inoculate is uncommon English at frequency #69,955 among 2,140 “I” headwords, classed as averb, transcribed /ɪˈnɒkjuleɪt/. Rarity is why readers land here mid-draft. 5 senses are on record.

The misspelling generator found no plausible variants for inoculate, suggesting the orthography follows predictable English patterns. 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: First attested in c. 1440; inherited from Middle English inoculaten (“to graft”), from Latin inoculātus, perfect passive participle of inoculō (“to ingraft an eye or bud of one plant into (another), implant”) (see -ate (verb-forming suffix)), from in- (“in”… The correct English form is inoculate, spelled I-N-O-C-U-L-A-T-E.

Definition

  1. 1
    To introduce an antigenic substance or vaccine into something (e.g. the body) or someone, such as to produce immunity to a specific disease.
  2. 2
    To safeguard or protect something as if by inoculation.
  3. 3
    To add one substance to another.
  4. 4
    To graft by inserting buds.
  5. 5
    To introduce into the mind (used especially of harmful ideas or principles).

Recorded use

Wiktionary examples

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

  1. But you would not willingly thus give up the Cause; therefore endeavour to draw others into your Assistance, and venture to assert, that by the Account Dr. Nettleton gives, as also by the best Observation upon those who have been Inoculated in this City, scarcely a fourth part of them have had a true and genuine Small Pox.
  2. The sense that it takes outrageous fortune to get inoculated echoes here in the Bay Area, where pharmacies have canceled flu-shot clinics, doctors turn away pleading patients and health officials are reduced to telling panicked callers that they should practice good personal hygiene.

Etymology

First attested in c. 1440; inherited from Middle English inoculaten (“to graft”), from Latin inoculātus, perfect passive participle of inoculō (“to ingraft an eye or bud of one plant into (another), implant”) (see -ate (verb-forming suffix)), from in- (“in”) + oculus (“an eye”) + -ō (verb-forming suffix).

This word in other languages

inoculer(Français)impfen(Deutsch)inocular(Português)

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

How do you spell "inoculate"?
"inoculate" is spelled I-N-O-C-U-L-A-T-E. The IPA pronunciation is /ɪˈnɒkjuleɪt/.
What does "inoculate" mean?
As a verb, "inoculate" means: To introduce an antigenic substance or vaccine into something (e.g. the body) or someone, such as to produce immunity to a specific disease.
How do you pronounce "inoculate"?
The IPA (International Phonetic Alphabet) transcription for "inoculate" is /ɪˈnɒkjuleɪt/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "inoculate"?
First attested in c. 1440; inherited from Middle English inoculaten (“to graft”), from Latin inoculātus, perfect passive participle of inoculō (“to ingraft an eye or bud of one plant into (another), implant”) (see -ate (verb-forming suffix)), from... 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.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "inoculate", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 9 letters (nearest by frequency rank).

invisibly#69,963harmonise#69,920keystroke#69,998Khashoggi#69,999

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

Source: FrequencyWords open word-frequency list