nebulous

/ˈnɛbjʊləs/

//ˈnɛbjʊləs// adj

"nebulous" is a 8-letter English headword indexed on PlainSpell.

The verdict

“nebulous” has 11 generated spelling variants in the English index at frequency #39,449. The variants make it a useful spelling check.

#39,449
frequency rank, English
1,534
“N” headwords
11
tracked misspellings

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - In the form of a cloud or haze; hazy.

Corpus desk

Index EN-nebulous · nebulous · English

nebulous · rank #39,449 · 11 variants · 0 confusables

  • FREQ-MID #39,449
  • LEN-LONG 8 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-MID 11 variants
  • BOOK-MID 1,534
  • PHOTO-FINISH Neapolitan

Nearest frequency peer: Neapolitan (-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.

Frequency neighbourhood for “nebulous”

Lower corpus rank = more everyday usage (inverted bar length for readability)

corpus weight

What this shows Bars show where “nebulous” sits against the nearest ranked English headwords in the FrequencyWords band, not a reprint of letter-browse containment.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for nebulous
PropertyValue
Headwordnebulous
LanguageEnglish
Part of speechAdjective
IPA/ˈnɛbjʊləs/
Letters8
Frequency rank#39,449
Misspellings tracked11
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “nebulous” sits in English frequency

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).nebulouslands here:

#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. Same rarity band neighbours include “Neapolitan” (#39,448), “negated” (#39,450), “natty” (#39,446). Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 11 spelling variants around nebulous (IPA /ˈnɛbjʊləs/), anadjective. Corpus frequency is #39,449 among 1,534 “N” headwords. Wiktionary lists 3 senses, so context still picks the gloss.

Our generated misspelling index lists 11 likely wrong-spelling variants for nebulous, with forms such as "enbulous", "nbeulous", and "nebbulous". Every one of these variants traces to a single-character edit -- an added or dropped letter, a swapped consonant, or a vowel swap -- the kind of slip a spell-checker is built to catch. No confusable counterpart is on file for this word, since its spelling is unusual enough that it doesn't cluster with a lookalike.

Etymologically, the entry records: From Middle English, from Middle French nebuleus, from Latin nebulōsus (“full of mist, foggy, cloudy”), from nebula (“mist, vapour, cloud”), from Proto-Indo-European *nébʰos (“cloud, vapor, fog, moist, sky”). Cognates *Ancient Greek νέφος (néphos, “cloud”) … The correct English form is nebulous, spelled N-E-B-U-L-O-U-S.

Definition

  1. 1
    In the form of a cloud or haze; hazy.
  2. 2
    Vague or ill-defined.
  3. 3
    Relating to a nebula or nebulae.

Recorded use

Wiktionary examples

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

  1. The magistrate could not possibly, on the evidence, have held them for a higher court. On the one hand the compositors and pressmen were forced to admit that the light was uncertain, that they were themselves much perturbed, and that it was difficult for them to swear to the identity of the assailants; although they believed that the accused were among th…
  2. The mothers in NaturalMoms discussed nebulous fears about potential harms from vaccines and their distrust of the medical professionals who promoted a universal immunization schedule.

Etymology

From Middle English, from Middle French nebuleus, from Latin nebulōsus (“full of mist, foggy, cloudy”), from nebula (“mist, vapour, cloud”), from Proto-Indo-European *nébʰos (“cloud, vapor, fog, moist, sky”). Cognates *Ancient Greek νέφος (néphos, “cloud”) *German Nebel **Old High German nebul (“cloud, fog”) *Old English nifol, neowol (“dark, gloomy, obscure, precipitous, prone”) by surface analysis, nebula + -ous. More at neveling, nuel.

Synonyms

Antonyms

This word in other languages

Common misspellings

Also misspelled as:

  • enbulous
  • nbeulous
  • nebbulous
  • nebluous
  • nebullous
  • nebulosu
  • nebulouss
  • nebuluos
  • nebuolus
  • neublous
  • nnebulous

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of nebulous - counted as single-character edits (an insertion, a deletion, or a substituted letter). The larger the bar, the easier the typo is to spot; one-edit slips are the ones that sneak past readers.

enbulous2nbeulous2nebbulous1nebluous2nebullous1nebulosu2nebulouss1nebuluos2
Edit distance from "nebulous"

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 "nebulous"?
"nebulous" is spelled N-E-B-U-L-O-U-S. The IPA pronunciation is /ˈnɛbjʊləs/.
What does "nebulous" mean?
As an adjective, "nebulous" means: In the form of a cloud or haze; hazy.
What are common misspellings of "nebulous"?
Common misspellings include "enbulous", "nbeulous", "nebbulous", "nebluous", "nebullous". The correct spelling is "nebulous".
How do you pronounce "nebulous"?
The IPA (International Phonetic Alphabet) transcription for "nebulous" is /ˈnɛbjʊləs/. 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 "nebulous"?
From Middle English, from Middle French nebuleus, from Latin nebulōsus (“full of mist, foggy, cloudy”), from nebula (“mist, vapour, cloud”), from Proto-Indo-European *nébʰos (“cloud, vapor, fog, moist, sky”). Cognates *Ancient Greek νέφος (néphos,... 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 "nebulous", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 8 letters (nearest by frequency rank).

Similar misspelling depth

Headwords with a similar count of attested misspellings (11 here; floor ≥5).

What to do next

You've looked up "nebulous". Here's where to go from here.

  • 11 edit-distance misspelling variants are generated for spell-check research on this headword. See variants
  • Usage frequency rank #39,449 among English headwords in this corpus. Corpus statistics
  • Browse more English words in the "N" letter cohort. N–Z browse
  • PlainSpell rotates a curated Word of the Day from the English corpus, a passive way to discover vocabulary. Word of the Day

PlainSpell is a reference corpus, not spelling advice. Verify unusual forms in context.

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