# inefficiency

> English word · Noun · frequency rank #33,282

## Definitions
1. Lack of efficiency or effectiveness.

## Etymology
From in- + efficiency.

## Easily confused with
- **inefficient** (https://plainspell.com/en/vs/inefficiency-vs-inefficient)
- **insufficiency** (https://plainspell.com/en/vs/inefficiency-vs-insufficiency)

## Common misspellings (16)
`ienfficiency`, `ineffciiency`, `inefficciency`, `inefficeincy`, `inefficiecny`, `inefficienccy`, `inefficiencyy`, `inefficienncy`, `inefficienyc`, `inefficinecy`, `ineffiicency`, `ineficiency`, `inefifciency`, `infeficiency`, `innefficiency`, `niefficiency`

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/inefficiency