unbeliever

noun

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

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

The verdict

“unbeliever” is uncommon English (frequency #64,090 among 1,433 “U” headwords), classed as a noun. The kind of spelling people second-guess.

#64,090
frequency rank, English
1,433
“U” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - One who does not believe, particularly in a deity (used by believers to describe people who do not believe in the same deity or deities as themselves).

Corpus desk

Index EN-unbeliever · unbeliever · English

unbeliever · rank #64,090 · 0 variants · 0 confusables

  • FREQ-RARE #64,090
  • LEN-MEGA 10 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 1,433
  • PHOTO-FINISH unapproachable

Nearest frequency peer: unapproachable (-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 “unbeliever”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

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

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for unbeliever
PropertyValue
Headwordunbeliever
LanguageEnglish
Part of speechNoun
Letters10
Frequency rank#64,090
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “unbeliever” in English

This scale runs from the tiny cluster of words that carry ordinary speech (left) to the long tail of words almost nobody reaches for (right).unbelieverfalls in this rarity band:

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

Scale is logarithmic (each tick is 10× rarer). Rare peers in the same band: “unapproachable” (#64,089), “undefended” (#64,092), “umbrage” (#64,087). Among 1,433 “U” headwords, “unbeliever” is #64,090. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

unbeliever is uncommon English at frequency #64,090 among 1,433 “U” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "One who does not believe, particularly in a deity (used by believers to describe people who do not believe in the same deity or deities as themselves).".

unbeliever has no tracked misspelling variants, a sign its spelling follows regular English conventions. This headword has no recorded confusable partner, which typically means the spelling is too distinctive to be mistaken for another word.

Etymologically, the entry records: From un- + believer, perhaps a corruption of earlier wanbeliever (“unbeliever”). The correct English form is unbeliever, spelled U-N-B-E-L-I-E-V-E-R.

Definition

  1. 1
    One who does not believe, particularly in a deity (used by believers to describe people who do not believe in the same deity or deities as themselves).

Recorded use

Wiktionary examples

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

  1. `Well, I suppose that we must try it,' I said; and the others assented in their various ways - Leo, as though it were the best joke in the world; Job, in respectful disgust; and Mahomed, with an invocation to the Prophet, and a comprehensive curse upon all unbelievers and their ways of thought and travel.
  2. I tried to persuade some of the men to come and save you, but they would not do it, saying: ‘Let the unbelievers kill one another if they wish. It is none of our affair, and if we go and interfere with Ali-ben-Ahmed’s plans we shall only stir up a fight with our own people.’

Etymology

From un- + believer, perhaps a corruption of earlier wanbeliever (“unbeliever”).

Synonyms

infidelnon-believernonbelievernullifidian

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 "unbeliever"?
"unbeliever" is spelled U-N-B-E-L-I-E-V-E-R.
What does "unbeliever" mean?
As a noun, "unbeliever" means: One who does not believe, particularly in a deity (used by believers to describe people who do not believe in the same deity or deities as themselves).
What is the origin of the word "unbeliever"?
From un- + believer, perhaps a corruption of earlier wanbeliever (“unbeliever”). 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 "unbeliever", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 10 letters (nearest by frequency rank).

undefended#64,092Trivandrum#64,075transgress#64,071Vyacheslav#64,112

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

Source: FrequencyWords open word-frequency list