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

• corrupt
• debased
• debauched
• decadent
• degenerate
• degraded
• demoralized
• depraved
• dissipated
• dissolute
• jackleg
• libertine
• loose
• perverse
• perverted
• rakehell
• rakehelly
• rakish
• reprobate
• sick
• unwholesome
• warped

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

As more companies experiment with generative AI, many find their projects fail due to unclean or inaccurate data. —Adrian Swinscoe, Forbes, 17 Dec. 2024

Produce can also be contaminated in processing centers by workers or unclean surfaces or equipment, or in distribution trucks. —Emily Schmall, New York Times, 25 Nov. 2024

Ingesting water from an unclean bottle can result in gastrointestinal or respiratory issues, says Qinchun Rao, a professor of Food and Nutrition at Florida State University. —Kayla Blanton, Outside Online, 17 Nov. 2024

Raw or unclean data is not optimal in business since misleading data leads to wrong decisions. —Cristian Randieri, Forbes, 21 Oct. 2024

Word History

First Known Use

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

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