unbeliever

noun

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

The verdict

“unbeliever” is uncommon English (frequency #64,090 among 23,789 “U” headwords), classed as a noun. The kind of spelling people second-guess.

#64,090
frequency rank, English
23,789
“U” headwords

According to Wiktionary data (CC BY-SA, analyzed May 6, 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).

Key facts for unbeliever
PropertyValue
Headwordunbeliever
LanguageEnglish
Part of speechNoun
Letters10
Frequency rank#64,090
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “unbeliever” sits in English frequency

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

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

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Rare enough to double-check

unbeliever is uncommon English at frequency #64,090 among 23,789 “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).

Etymology

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

Synonyms

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.

Using “unbeliever”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is U-N-B-E-L-I-E-V-E-R - every other letter order is a misspelling in standard orthography.
  • Browse more English words and confusable pairs in the same reference. English words

Other uncommon English words near this rank

Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

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

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list