curious

/ˈkjʊə.ɹi.əs/

//ˈkjʊə.ɹi.əs// adj

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

"curious" is a 7-letter English headword indexed on PlainSpell.

The verdict

“curious” has 9 generated spelling variants in the English index at frequency #3,289. The variants make it a useful spelling check.

#3,289
frequency rank, English
5,599
“C” headwords
9
tracked misspellings
3
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Tending to ask questions, or to want to explore or investigate; inquisitive; (with a negative connotation) nosy, prying.

Corpus desk

Index EN-curious · curious · English

curious · rank #3,289 · 9 variants · 3 confusables

  • FREQ-COMMON #3,289
  • LEN-LONG 7 letters
  • VOW-4 4 vowels
  • CONFUS-LOW 3 pairs
  • VAR-MID 9 variants
  • BOOK-DENSE 5,599
  • PHOTO-FINISH covering

Nearest frequency peer: covering (-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 “curious”

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

corpus weight

What this shows “curious” 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).

curious vs curiously
78% similar
curious vs copious
71% similar
curious vs cautious
75% similar

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

Key facts for curious
PropertyValue
Headwordcurious
LanguageEnglish
Part of speechAdjective
IPA/ˈkjʊə.ɹi.əs/
Letters7
Frequency rank#3,289
Misspellings tracked9
Confusable pairs3
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “curious”

Word frequency stretches from the small set of words we reach for constantly (left) out to the long tail barely used once in a while (right).curiouslands here:

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

Scale is logarithmic (each tick is 10× rarer). Same rarity band neighbours include “covering” (#3,288), “directors” (#3,290), “cooking” (#3,287). Among 5,599 “C” headwords, “curious” is #3,289. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 9 spelling variants around curious (IPA /ˈkjʊə.ɹi.əs/), anadjective. Corpus frequency is #3,289 among 5,599 “C” headwords. Wiktionary lists 7 senses, so context still picks the gloss.

Our generated misspelling index lists 9 likely wrong-spelling variants for curious, with forms such as "ccurious", "cruious", and "cuirous". 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 3 confusable-pair relationships, "curiously", "copious", "cautious", where similar look or sound leads writers to substitute one word for another in context.

Etymologically, the entry records: From Middle English curious, from Old French curius, from Latin cūriōsus. The English word is cognate with Italian curioso, Occitan curios, Portuguese curioso, and Spanish curioso. The correct English form is curious, spelled C-U-R-I-O-U-S.

Definition

  1. 1
    Tending to ask questions, or to want to explore or investigate; inquisitive; (with a negative connotation) nosy, prying.
  2. 2
    Caused by curiosity.
  3. 3
    Leading one to ask questions about; somewhat odd, out of the ordinary, or unusual.
  4. 4
    Clipping of bi-curious.
  5. 5
    Interested in entering a romantic or sexual relationship with a specified group.
  6. 6
    Careful, fastidious, particular; (specifically) demanding a high standard of excellence, difficult to satisfy.
  7. 7
    Carefully or artfully constructed; made with great elegance or skill.

Recorded use

Wiktionary examples

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

  1. Young children are naturally curious about the world and everything in it.
  2. I was ſo curious likewiſe as to goe to the place, where it is ſaid the great tower of Babel was built, being about halfe a days iourney diſtant; where I ſawe nothing but a high mountaine of earth in the midſt of a plaine where in digging you may finde certaine bricks, whereof it is ſaide the tower is built.

Etymology

From Middle English curious, from Old French curius, from Latin cūriōsus. The English word is cognate with Italian curioso, Occitan curios, Portuguese curioso, and Spanish curioso.

This word in other languages

curioso(Español)curieux(Français)neugierig(Deutsch)

Common misspellings

Also misspelled as:

  • ccurious
  • cruious
  • cuirous
  • curiosu
  • curiouss
  • curiuos
  • curoius
  • currious
  • ucrious

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of curious - 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.

ccurious1cruious2cuirous2curiosu2curiouss1curiuos2curoius2currious1
Edit distance from "curious"

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 "curious"?
"curious" is spelled C-U-R-I-O-U-S. The IPA pronunciation is /ˈkjʊə.ɹi.əs/.
What does "curious" mean?
As an adjective, "curious" means: Tending to ask questions, or to want to explore or investigate; inquisitive; (with a negative connotation) nosy, prying.
What words are commonly confused with "curious"?
"curious" is commonly confused with "curiously", "copious", "cautious". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "curious"?
The IPA (International Phonetic Alphabet) transcription for "curious" is /ˈkjʊə.ɹi.əs/. 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 "curious"?
From Middle English curious, from Old French curius, from Latin cūriōsus. The English word is cognate with Italian curioso, Occitan curios, Portuguese curioso, and Spanish curioso. 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 "curious", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 7 letters (nearest by frequency rank).

cooking#3,287compare#3,285charity#3,283anxiety#3,278

Similar misspelling depth

Headwords with a similar count of attested misspellings (9 here; floor ≥5).

castle9 variantsfinals9 variantsformal9 variantsactress9 variants

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

Source: FrequencyWords open word-frequency list