effective

/ɪˈfɛktɪv/

//ɪˈfɛktɪv// adj

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

"effective" is a 9-letter English headword indexed on PlainSpell.

The verdict

“effective” has 11 generated spelling variants in the English index at frequency #1,363. The variants make it a useful spelling check.

#1,363
frequency rank, English
2,246
“E” headwords
11
tracked misspellings
3
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Having the power to produce a required effect or effects.

Corpus desk

Index EN-effective · effective · English

effective · rank #1,363 · 11 variants · 3 confusables

  • FREQ-COMMON #1,363
  • LEN-LONG 9 letters
  • VOW-4 4 vowels
  • CONFUS-LOW 3 pairs
  • VAR-MID 11 variants
  • BOOK-MID 2,246
  • PHOTO-FINISH crime

Nearest frequency peer: crime (-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 “effective”

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

corpus weight

What this shows “effective” 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).

effective vs elective
78% similar
effective vs effectively
82% similar
effective vs effecting
78% similar

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

Key facts for effective
PropertyValue
Headwordeffective
LanguageEnglish
Part of speechAdjective
IPA/ɪˈfɛktɪv/
Letters9
Frequency rank#1,363
Misspellings tracked11
Confusable pairs3
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “effective”

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).effectivelands here:

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

Scale is logarithmic (each tick is 10× rarer). Same rarity band neighbours include “crime” (#1,362), “effects” (#1,364), “cars” (#1,361). Among 2,246 “E” headwords, “effective” is #1,363. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 11 spelling variants around effective (IPA /ɪˈfɛktɪv/), anadjective. Corpus frequency is #1,363 among 2,246 “E” headwords. Wiktionary lists 7 senses, so context still picks the gloss.

Our generated misspelling index lists 11 likely wrong-spelling variants for effective, with forms such as "efective", "efefctive", and "effcetive". 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, "elective", "effectively", "effecting", a pairing that trips writers up because the two words share enough sound or shape to blur together.

Etymologically, the entry records: From French effectif, from Latin effectīvus (“productive; effective”), from efficiō (“I make; I bring about”), equivalent to effect + -ive. The correct English form is effective, spelled E-F-F-E-C-T-I-V-E.

Definition

  1. 1
    Having the power to produce a required effect or effects.
  2. 2
    Producing a decided or decisive effect.
  3. 3
    Efficient, serviceable, or operative, available for useful work.
  4. 4
    Actually in effect.
  5. 5
    Having no negative coefficients.
  6. 6
    Such that no group element acts trivially.
  7. 7
    approximate; Not describing the fundamental dynamic changes in some system as they happen.

Recorded use

Wiktionary examples

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

  1. The pill is an effective method of birth control.
  2. Fire ants circumvented the problem of an ineffective sting by having an unusual and highly effective venom that when daubed or sprayed on other ants penetrates their waxy protective integumental barrier and kills or disables them.

Etymology

From French effectif, from Latin effectīvus (“productive; effective”), from efficiō (“I make; I bring about”), equivalent to effect + -ive.

This word in other languages

efectivo(Español)efficace(Français)wirksam(Deutsch)eficaz(Português)

Common misspellings

Also misspelled as:

  • efective
  • efefctive
  • effcetive
  • effecctive
  • effecitve
  • effectiev
  • effectivve
  • effecttive
  • effectvie
  • effetcive
  • fefective

Misspelling Pattern Breakdown

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

efective1efefctive2effcetive2effecctive1effecitve2effectiev2effectivve1effecttive1
Edit distance from "effective"

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 "effective"?
"effective" is spelled E-F-F-E-C-T-I-V-E. The IPA pronunciation is /ɪˈfɛktɪv/.
What does "effective" mean?
As an adjective, "effective" means: Having the power to produce a required effect or effects.
What words are commonly confused with "effective"?
"effective" is commonly confused with "elective", "effectively", "effecting". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "effective"?
The IPA (International Phonetic Alphabet) transcription for "effective" is /ɪˈfɛktɪv/. 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 "effective"?
From French effectif, from Latin effectīvus (“productive; effective”), from efficiō (“I make; I bring about”), equivalent to effect + -ive. 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 "effective", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 9 letters (nearest by frequency rank).

professor#1,350agreement#1,383challenge#1,389Christian#1,391

Similar misspelling depth

Headwords with a similar count of attested misspellings (11 here; floor ≥5).

holding11 variantsreports11 variantsrecords11 variantslargest11 variants

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

Source: FrequencyWords open word-frequency list