catalyst

/ˈkæt.ɪ.lɪst/

//ˈkæt.ɪ.lɪst// noun

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

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

The verdict

“catalyst” has 13 generated spelling variants in the English index at frequency #10,177. The variants make it a useful spelling check.

#10,177
frequency rank, English
5,599
“C” headwords
13
tracked misspellings
2
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A substance that increases the rate of a chemical reaction without being consumed in the process.

Corpus desk

Index EN-catalyst · catalyst · English

catalyst · rank #10,177 · 13 variants · 2 confusables

  • FREQ-MID #10,177
  • LEN-LONG 8 letters
  • VOW-3 3 vowels
  • CONFUS-LOW 2 pairs
  • VAR-HIGH 13 variants
  • BOOK-DENSE 5,599
  • PHOTO-FINISH cedar

Nearest frequency peer: cedar (+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 “catalyst”

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

corpus weight

What this shows “catalyst” 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).

catalyst vs catalysis
78% similar
catalyst vs cataclysm
78% similar

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

Key facts for catalyst
PropertyValue
Headwordcatalyst
LanguageEnglish
Part of speechNoun
IPA/ˈkæt.ɪ.lɪst/
Letters8
Frequency rank#10,177
Misspellings tracked13
Confusable pairs2
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “catalyst”

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right).catalystlands 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 “cedar” (#10,178), “cane” (#10,175), “cancellation” (#10,174). Among 5,599 “C” headwords, “catalyst” is #10,177. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 13 spelling variants around catalyst (IPA /ˈkæt.ɪ.lɪst/), anoun. Corpus frequency is #10,177 among 5,599 “C” headwords. Wiktionary lists 5 senses, so context still picks the gloss.

Our generated misspelling index lists 13 likely wrong-spelling variants for catalyst, with forms such as "actalyst", "caatlyst", and "catallyst". Each variant is a distinct typo pattern an edit-distance generator flags, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution. It also participates in 2 confusable-pair relationships, "catalysis", "cataclysm", a pairing that trips writers up because the two words share enough sound or shape to blur together.

Etymologically, the entry records: From catalysis + -ist. The correct English form is catalyst, spelled C-A-T-A-L-Y-S-T.

Definition

  1. 1
    A substance that increases the rate of a chemical reaction without being consumed in the process.
  2. 2
    Something that encourages progress or change.
  3. 3
    An inciting incident that sets the successive conflict into motion.
  4. 4
    A catalytic converter.
  5. 5
    An object that facilitates the casting of a spell (such as a magic wand).

Recorded use

Wiktionary examples

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

  1. Enzymes, the catalysts of biological systems, are remarkable molecular devices that determine the pattern of chemical transformations.
  2. Economic development and integration are working as a catalyst for peace.

Etymology

From catalysis + -ist.

This word in other languages

catalizador(Español)catalyseur(Français)Katalysator(Deutsch)catalisador(Português)

Common misspellings

Also misspelled as:

  • actalyst
  • caatlyst
  • catallyst
  • catalsyt
  • catalysst
  • catalystt
  • catalyts
  • catalyyst
  • cataylst
  • catlayst
  • cattalyst
  • ccatalyst
  • ctaalyst

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of catalyst - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.

actalyst2caatlyst2catallyst1catalsyt2catalysst1catalystt1catalyts2catalyyst1
Edit distance from "catalyst"

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 "catalyst"?
"catalyst" is spelled C-A-T-A-L-Y-S-T. The IPA pronunciation is /ˈkæt.ɪ.lɪst/.
What does "catalyst" mean?
As a noun, "catalyst" means: A substance that increases the rate of a chemical reaction without being consumed in the process.
What words are commonly confused with "catalyst"?
"catalyst" is commonly confused with "catalysis", "cataclysm". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "catalyst"?
The IPA (International Phonetic Alphabet) transcription for "catalyst" is /ˈkæt.ɪ.lɪst/. 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 "catalyst"?
From catalysis + -ist. 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 "catalyst", not the corpus desk frequency band.

Same letter count

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

betrayed#10,166dementia#10,190activate#10,159dispatch#10,198

Similar misspelling depth

Headwords with a similar count of attested misspellings (13 here; floor ≥5).

billionaire13 variantsadmissions13 variantsaccountant13 variantsvalentine13 variants

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

Source: FrequencyWords open word-frequency list