reactivity

/rɪˈakˈtɪvɪti/

//rɪˈakˈtɪvɪti// noun

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

"reactivity" is a 10-letter English headword indexed on PlainSpell.

The verdict

“reactivity” has 15 generated spelling variants in the English index at frequency #33,387. The variants make it a useful spelling check.

#33,387
frequency rank, English
3,094
“R” headwords
15
tracked misspellings
2
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - responsiveness to stimulation

Corpus desk

Index EN-reactivity · reactivity · English

reactivity · rank #33,387 · 15 variants · 2 confusables

  • FREQ-MID #33,387
  • LEN-MEGA 10 letters
  • VOW-5 5 vowels
  • CONFUS-LOW 2 pairs
  • VAR-HIGH 15 variants
  • BOOK-MID 3,094
  • PHOTO-FINISH rationalize

Nearest frequency peer: rationalize (-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 “reactivity”

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

corpus weight

What this shows “reactivity” 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).

reactivity vs relativity
80% similar
reactivity vs reactivate
80% similar

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

Key facts for reactivity
PropertyValue
Headwordreactivity
LanguageEnglish
Part of speechNoun
IPA/rɪˈakˈtɪvɪti/
Letters10
Frequency rank#33,387
Misspellings tracked15
Confusable pairs2
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “reactivity”

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

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

Scale is logarithmic (each tick is 10× rarer). Same rarity band neighbours include “rationalize” (#33,386), “reassignment” (#33,388), “rebrand” (#33,389). Among 3,094 “R” headwords, “reactivity” is #33,387. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 15 spelling variants around reactivity (IPA /rɪˈakˈtɪvɪti/), anoun. Corpus frequency is #33,387 among 3,094 “R” headwords. Wiktionary lists 2 senses, so context still picks the gloss.

Our generated misspelling index lists 15 likely wrong-spelling variants for reactivity, with forms such as "eractivity", "raectivity", and "reacctivity". 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, "relativity", "reactivate", since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Etymologically, the entry records: From reactive + -ity. The correct English form is reactivity, spelled R-E-A-C-T-I-V-I-T-Y.

Definition

  1. 1
    responsiveness to stimulation
  2. 2
    relative susceptibility to chemical reaction

Etymology

From reactive + -ity.

This word in other languages

réactivité(Français)

Common misspellings

Also misspelled as:

  • eractivity
  • raectivity
  • reacctivity
  • reacitvity
  • reactiivty
  • reactivitty
  • reactivityy
  • reactiviyt
  • reactivtiy
  • reactivvity
  • reacttivity
  • reactviity
  • reatcivity
  • recativity
  • rreactivity

Misspelling Pattern Breakdown

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

eractivity2raectivity2reacctivity1reacitvity2reactiivty2reactivitty1reactivityy1reactiviyt2
Edit distance from "reactivity"

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 "reactivity"?
"reactivity" is spelled R-E-A-C-T-I-V-I-T-Y. The IPA pronunciation is /rɪˈakˈtɪvɪti/.
What does "reactivity" mean?
As a noun, "reactivity" means: responsiveness to stimulation
What words are commonly confused with "reactivity"?
"reactivity" is commonly confused with "relativity", "reactivate". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "reactivity"?
The IPA (International Phonetic Alphabet) transcription for "reactivity" is /rɪˈakˈtɪvɪti/. 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 "reactivity"?
From reactive + -ity. 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 "reactivity", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 10 letters (nearest by frequency rank).

radicalism#33,383sheltering#33,414overheated#33,355sleeveless#33,421

Similar misspelling depth

Headwords with a similar count of attested misspellings (15 here; floor ≥5).

rationalize15 variantssnowstorm15 variantssubsurface15 variantslifesaving15 variants

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

Source: FrequencyWords open word-frequency list