complex

noun

The verdict

“complex” is a moderately-common French word, ranked #44,940 in French word frequency and used as a noun.

#44,940
frequency rank, French
7
letters
11
tracked misspellings
18
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Ce qui forme un tout dont les parties interagissent de manière que ce tout soit à la fois plus et autre chose que la somme de ses parties et acquière une unité propre.

Visual similarity to commonly confused words

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

complex vs compte
71% similar
complex vs couple
71% similar
complex vs comptes
71% similar

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

Key facts for complex
PropertyValue
Headwordcomplex
LanguageFrench
Part of speechNoun
Letters7
Frequency rank#44,940
Misspellings tracked11
Confusable pairs18
SourceWiktionary (kaikki.org)

Where “complex” sits in French 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). complex lands here:

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

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

Spelling & Dictionary Insight

The French entry for complex is 7 letters long, classified as a noun. Corpus data places it at rank #44,940 in overall French word frequency, marking it as uncommon enough that many writers pause before typing it. The dominant gloss from Wiktionary reads: "Ce qui forme un tout dont les parties interagissent de manière que ce tout soit à la fois plus et autre chose que la somme de ses parties et acquière une unité propre.".

Our generated misspelling index lists 11 likely wrong-spelling variants for complex, with forms such as "ccomplex", "cmoplex", and "comlpex". 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. It also participates in 18 confusable-pair relationships, "compte", "couple", "comptes", and more, a pairing that trips writers up because the two words share enough sound or shape to blur together.

No borrowing history is documented for this entry, leaving phoneme-to-grapheme mapping as the best guide to its spelling rather than a borrowing history. The correct French form is complex, spelled C-O-M-P-L-E-X.

Definition

  1. 1
    Ce qui forme un tout dont les parties interagissent de manière que ce tout soit à la fois plus et autre chose que la somme de ses parties et acquière une unité propre.

Common misspellings

Also misspelled as: ccomplex,cmoplex,comlpex,commplex,compelx,complexx,compllex,complxe,compplex,copmlex,ocmplex

Misspelling Pattern Breakdown

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

ccomplex1cmoplex2comlpex2commplex1compelx2complexx1compllex1complxe2
Edit distance from "complex"

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 French corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "complex"?
"complex" is spelled C-O-M-P-L-E-X.
What does "complex" mean?
As a noun, "complex" means: Ce qui forme un tout dont les parties interagissent de manière que ce tout soit à la fois plus et autre chose que la somme de ses parties et acquière une unité propre.
What words are commonly confused with "complex"?
"complex" is commonly confused with "compte", "couple", "comptes". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
What language does "complex" come from?
"complex" is a French word. You can look up definitions, pronunciations, and spelling data for this and other words across English, Spanish, Portuguese, French, and German on PlainSpell.
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 “complex”

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

  • The one correct French spelling is C-O-M-P-L-E-X - every other letter order is a misspelling in standard orthography.
  • Don't mix it up with “compte” - see the side-by-side comparison. complex vs compte
  • Browse more French words and confusable pairs in the same reference. French words
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