# morbidity

> English word · Noun · frequency rank #30,888

## Definitions
1. The quality of being unhealthful or diseased, sometimes including the cause.
2. The quality of being morbid; an attitude or state of mind marked by gloom.
3. The incidence of a disease, as a rate of a population which is affected.
4. An occurrence of illness or disease, or a single symptom of that illness.
5. Adverse effects caused by a medical treatment such as surgery.
6. The sickness rate of a population.

## Etymology
Recorded since 1721; from morbid + -ity, from Latin morbidus (“diseased”), from morbus (“disease”), from the root of morī (“to die”) or from Proto-Indo-European *mer- (“to rub, pound, wear away”).

## Easily confused with
- **morbidly** (https://plainspell.com/en/vs/morbidity-vs-morbidly)
- **mobility** (https://plainspell.com/en/vs/mobility-vs-morbidity)

## Common misspellings (14)
`mmorbidity`, `mobridity`, `morbbidity`, `morbdiity`, `morbiddity`, `morbiditty`, `morbidityy`, `morbidiyt`, `morbidtiy`, `morbiidty`, `moribdity`, `morrbidity`, `mrobidity`, `omrbidity`

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