effectiveness

/ɪˈfɛk.tɪv.nɪs/

//ɪˈfɛk.tɪv.nɪs// noun

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

"effectiveness" is a 13-letter English headword indexed on PlainSpell.

The verdict

“effectiveness” has 16 generated spelling variants in the English index at frequency #6,567. The variants make it a useful spelling check.

#6,567
frequency rank, English
2,246
“E” headwords
16
tracked misspellings

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The property of being effective, of achieving results.

Corpus desk

Index EN-effectiveness · effectiveness · English

effectiveness · rank #6,567 · 16 variants · 0 confusables

  • FREQ-COMMON #6,567
  • LEN-MEGA 13 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-HIGH 16 variants
  • BOOK-MID 2,246
  • PHOTO-FINISH Dylan

Nearest frequency peer: Dylan (-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 “effectiveness”

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

corpus weight

What this shows “effectiveness” 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
Key facts for effectiveness
PropertyValue
Headwordeffectiveness
LanguageEnglish
Part of speechNoun
IPA/ɪˈfɛk.tɪv.nɪs/
Letters13
Frequency rank#6,567
Misspellings tracked16
Confusable pairs0
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “effectiveness”

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).effectivenesslands here:

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

Scale is logarithmic (each tick is 10× rarer). Same rarity band neighbours include “Dylan” (#6,566), “dresses” (#6,565), “ellen” (#6,569). Among 2,246 “E” headwords, “effectiveness” is #6,567. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 16 spelling variants around effectiveness (IPA /ɪˈfɛk.tɪv.nɪs/), anoun. Corpus frequency is #6,567 among 2,246 “E” headwords. Wiktionary lists 3 senses, so context still picks the gloss.

Our generated misspelling index lists 16 likely wrong-spelling variants for effectiveness, with forms such as "efectiveness", "efefctiveness", and "effcetiveness". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. No close-neighbour confusable shows up for this headword in our dataset, since no other headword is close enough in sound or shape to pair with it.

Etymologically, the entry records: From effective + -ness. The correct English form is effectiveness, spelled E-F-F-E-C-T-I-V-E-N-E-S-S.

Definition

  1. 1
    The property of being effective, of achieving results.
  2. 2
    The capacity or potential for achieving results.
  3. 3
    The degree to which something achieves results.

Recorded use

Wiktionary examples

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

  1. The effectiveness of the drug was well established.
  2. The problem with these precedents is that the Security Council did not authorize intervention in Syria, and an intervention there will thus harm, not help, the Council’s credibility and effectiveness.

Etymology

From effective + -ness.

This word in other languages

efectividad(Español)efficacité(Français)Wirksamkeit(Deutsch)eficiência(Português)

Common misspellings

Also misspelled as:

  • efectiveness
  • efefctiveness
  • effcetiveness
  • effecctiveness
  • effecitveness
  • effectievness
  • effectiveenss
  • effectivenes
  • effectivenness
  • effectivenses
  • effectivneess
  • effectivveness
  • effecttiveness
  • effectvieness
  • effetciveness
  • fefectiveness

Misspelling Pattern Breakdown

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

efectiveness1efefctiveness2effcetiveness2effecctiveness1effecitveness2effectievness2effectiveenss2effectivenes1
Edit distance from "effectiveness"

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 "effectiveness"?
"effectiveness" is spelled E-F-F-E-C-T-I-V-E-N-E-S-S. The IPA pronunciation is /ɪˈfɛk.tɪv.nɪs/.
What does "effectiveness" mean?
As a noun, "effectiveness" means: The property of being effective, of achieving results.
What are common misspellings of "effectiveness"?
Common misspellings include "efectiveness", "efefctiveness", "effcetiveness", "effecctiveness", "effecitveness". The correct spelling is "effectiveness".
How do you pronounce "effectiveness"?
The IPA (International Phonetic Alphabet) transcription for "effectiveness" is /ɪˈfɛk.tɪv.nɪs/. 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 "effectiveness"?
From effective + -ness. 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 "effectiveness", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 13 letters (nearest by frequency rank).

traditionally#6,532technological#6,528sophisticated#6,623independently#6,481

Similar misspelling depth

Headwords with a similar count of attested misspellings (16 here; floor ≥5).

exceptional16 variantsdisturbing16 variantslimitations16 variantsmeasurement16 variants

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

Source: FrequencyWords open word-frequency list