unbelievably

adv

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

"unbelievably" is a 12-letter English headword indexed on PlainSpell.

The verdict

“unbelievably” has 18 generated spelling variants in the English index at frequency #16,815. The variants make it a useful spelling check.

#16,815
frequency rank, English
1,433
“U” headwords
18
tracked misspellings
1
confusable pair

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - In a manner that one does not or cannot believe.

Corpus desk

Index EN-unbelievably · unbelievably · English

unbelievably · rank #16,815 · 18 variants · 1 confusable

  • FREQ-MID #16,815
  • LEN-MEGA 12 letters
  • VOW-6 6 vowels
  • CONFUS-LOW 1 pairs
  • VAR-HIGH 18 variants
  • BOOK-MID 1,433
  • PHOTO-FINISH ubiquitous

Nearest frequency peer: ubiquitous (-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.

Rank peers near misspelling magnet “unbelievably”

Same rarity band: useful when a typo lands on a peer headword

corpus weight

What this shows “unbelievably” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

unbelievably vs unbelievable
92% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for unbelievably
PropertyValue
Headwordunbelievably
LanguageEnglish
Part of speechAdverb
Letters12
Frequency rank#16,815
Misspellings tracked18
Confusable pairs1
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “unbelievably”

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

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

The axis is logarithmic, with each marked tick roughly ten times rarer than the last. Same rarity band neighbours include “ubiquitous” (#16,814), “unconventional” (#16,816), “turret” (#16,813). Among 1,433 “U” headwords, “unbelievably” is #16,815. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 18 spelling variants around unbelievably, anadverb. Corpus frequency is #16,815 among 1,433 “U” headwords. Wiktionary lists 3 senses, so context still picks the gloss.

Our generated misspelling index lists 18 likely wrong-spelling variants for unbelievably, with forms such as "nubelievably", "ubnelievably", and "unbbelievably". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. It also participates in 1 confusable-pair relationship, "unbelievable", where similar look or sound leads writers to substitute one word for another in context.

Etymologically, the entry records: From unbelievable + -ly. The correct English form is unbelievably, spelled U-N-B-E-L-I-E-V-A-B-L-Y.

Definition

  1. 1
    In a manner that one does not or cannot believe.
  2. 2
    To an extent not to be believed.
  3. 3
    Contrary to expectations, amazingly.

Recorded use

Wiktionary examples

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

  1. He gestured unbelievably. Everyone knew he was faking his illness.
  2. Almost unbelievably, some authors have formed the erroneous conception that ‘Hobson-Jobson’ is actually the double-barrelled surname of the dictionary’s editor.

Etymology

From unbelievable + -ly.

Synonyms

incredibly

This word in other languages

increíblemente(Español)incroyablement(Français)unglaublich(Deutsch)

Common misspellings

Also misspelled as:

  • nubelievably
  • ubnelievably
  • unbbelievably
  • unbeilevably
  • unbeleivably
  • unbelieavbly
  • unbelievabbly
  • unbelievablly
  • unbelievablyy
  • unbelievabyl
  • unbelievalby
  • unbelievbaly
  • unbelievvably
  • unbeliveably
  • unbellievably
  • unbleievably
  • uneblievably
  • unnbelievably

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of unbelievably - expressed in single-character edits (insert, delete, or swap one letter). Bigger bars stand out at a glance; a one-edit slip is the hardest to catch.

nubelievably2ubnelievably2unbbelievably1unbeilevably2unbeleivably2unbelieavbly2unbelievabbly1unbelievablly1
Edit distance from "unbelievably"

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 "unbelievably"?
"unbelievably" is spelled U-N-B-E-L-I-E-V-A-B-L-Y.
What does "unbelievably" mean?
As an adverb, "unbelievably" means: In a manner that one does not or cannot believe.
What words are commonly confused with "unbelievably"?
"unbelievably" is commonly confused with "unbelievable". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
What is the origin of the word "unbelievably"?
From unbelievable + -ly. 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 "unbelievably", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 12 letters (nearest by frequency rank).

hypertension#16,939irrespective#16,948conservatism#16,669substitution#17,040

Similar misspelling depth

Headwords with a similar count of attested misspellings (18 here; floor ≥5).

withdrawing18 variantsconfidently18 variantsprominently18 variantsauthoritative18 variants

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

Source: FrequencyWords open word-frequency list