inefficiency

noun

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

"inefficiency" is a 12-letter English headword indexed on PlainSpell.

The verdict

“inefficiency” has 16 generated spelling variants in the English index at frequency #33,282. The variants make it a useful spelling check.

#33,282
frequency rank, English
2,140
“I” headwords
16
tracked misspellings
2
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Lack of efficiency or effectiveness.

Corpus desk

Index EN-inefficiency · inefficiency · English

inefficiency · rank #33,282 · 16 variants · 2 confusables

  • FREQ-MID #33,282
  • LEN-MEGA 12 letters
  • VOW-6 6 vowels
  • CONFUS-LOW 2 pairs
  • VAR-HIGH 16 variants
  • BOOK-MID 2,140
  • PHOTO-FINISH inflationary

Nearest frequency peer: inflationary (+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 “inefficiency”

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

corpus weight

What this shows “inefficiency” 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).

inefficiency vs inefficient
83% similar
inefficiency vs insufficiency
85% similar

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

Key facts for inefficiency
PropertyValue
Headwordinefficiency
LanguageEnglish
Part of speechNoun
Letters12
Frequency rank#33,282
Misspellings tracked16
Confusable pairs2
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “inefficiency”

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).inefficiencylands here:

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

The axis is logarithmic, with each marked tick roughly ten times rarer than the last. Same rarity band neighbours include “inflationary” (#33,283), “imprinted” (#33,280), “inflexible” (#33,284). Among 2,140 “I” headwords, “inefficiency” is #33,282. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 16 spelling variants around inefficiency, anoun. Corpus frequency is #33,282 among 2,140 “I” headwords. Dominant gloss: "Lack of efficiency or effectiveness.".

Our generated misspelling index lists 16 likely wrong-spelling variants for inefficiency, with forms such as "ienfficiency", "ineffciiency", and "inefficciency". 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, "inefficient", "insufficiency", since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Etymologically, the entry records: From in- + efficiency. The correct English form is inefficiency, spelled I-N-E-F-F-I-C-I-E-N-C-Y.

Definition

  1. 1
    Lack of efficiency or effectiveness.

Recorded use

Wiktionary examples

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

  1. Yet only 21 percent of adult TANF recipients are working today, largely because of these inefficiencies and loopholes.
  2. “An organization’s reputational integrity is its greatest currency. When you compromise that, you have lost the loyalty and trust of your employees,” Wahler said. “His approach is going to increase inefficiency by creating an environment marked by instability, a lack of trust and divisiveness.”

Etymology

From in- + efficiency.

This word in other languages

inefficacité(Français)Ineffizienz(Deutsch)ineficiência(Português)

Common misspellings

Also misspelled as:

  • ienfficiency
  • ineffciiency
  • inefficciency
  • inefficeincy
  • inefficiecny
  • inefficienccy
  • inefficiencyy
  • inefficienncy
  • inefficienyc
  • inefficinecy
  • ineffiicency
  • ineficiency
  • inefifciency
  • infeficiency
  • innefficiency
  • niefficiency

Misspelling Pattern Breakdown

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

ienfficiency2ineffciiency2inefficciency1inefficeincy2inefficiecny2inefficienccy1inefficiencyy1inefficienncy1
Edit distance from "inefficiency"

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 "inefficiency"?
"inefficiency" is spelled I-N-E-F-F-I-C-I-E-N-C-Y.
What does "inefficiency" mean?
As a noun, "inefficiency" means: Lack of efficiency or effectiveness.
What words are commonly confused with "inefficiency"?
"inefficiency" is commonly confused with "inefficient", "insufficiency". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
What is the origin of the word "inefficiency"?
From in- + efficiency. 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 "inefficiency", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 12 letters (nearest by frequency rank).

inflationary#33,283fraudulently#33,248epistemology#33,222compensatory#33,183

Similar misspelling depth

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

inflexible16 variantsknighthood16 variantskryptonite16 variantsgeometrical16 variants

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

Source: FrequencyWords open word-frequency list