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

Unfortunately, during the early to mid-twentieth century, negative perceptions of immigrant and ethnic laborers led many outsiders to view their neighborhoods as unsafe, unclean, and detrimental to the social fabric of American cities. — Michelle Oliva-Espinosa, Kansas City Star, 18 July 2026

This is also the practice in India since the left hand is seen as unclean. — Boutayna Chokrane, Vogue, 17 July 2026

Putting diseased plant material in your compost pile and using unclean or dull pruning tools also increases the risk of transmitting issues from plant to plant. — Madeline Buiano, Martha Stewart, 5 July 2026

The floor sink beneath the 3-comp sink was draining slowly and observed unclean. — Veronica Fernandez-Alvarado july 3, Sacbee.com, 3 July 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