unclean

adjective

un·​clean ˌən-ˈklēn 

1

: dirty, filthy

2

: morally or spiritually impure

3

: infected with a harmful supernatural contagion

also : prohibited by ritual law for use or contact

4

: lacking in clarity and precision of conception or execution

uncleanness

ˌən-ˈklēn-nəs 

noun

Synonyms of unclean

• corrupt
• sick
• degraded

Examples of unclean in a Sentence

Many of their health problems were caused by unclean living conditions.

there's something unclean about this whole business

Recent Examples on the Web

Food prep including tomato cutting and slicing on an unclean surface. — Sacbee.com, 18 Sep. 2026

Using unclean tools can introduce pathogens or diseases to your mint plants, potentially harming them and affecting future harvests. — Lauren Wellbank, Martha Stewart, 14 Sep. 2026

The inspector found unclean conditions and deficient handwashing practices and sanitation methods, according to the spokesperson. — Harriet Ramos, Fort Worth Star-Telegram, 9 Sep. 2026

Day centers for the elderly are rife with scabies and anemia; the seniors are emaciated, malnourished, and unclean. — Nora Gámez Torres, Miami Herald, 31 Aug. 2026

Word History

First Known Use

before the 12th century, in the meaning defined at sense 2

Rhymes for unclean

• agin
• alkene
• allene
• ameen
• amin
• arene
• athene
• baleen
• beeline
• benzene
• between
• bromine

Kids Definition

unclean

adjective

un·​clean ˌən-ˈklēn 

1

: not pure and innocent : wicked

2

: prohibited by religious law for use or contact

3

: dirty entry 1 sense 1, filthy

uncleanness

-ˈklēn-nəs 

noun