cleanliness

noun

clean·​li·​ness ˈklen-lē-nəs 

: the quality or state of being clean : the practice of keeping oneself or one's surroundings clean

Though a stale remark, it can hardly be said too often, that personal cleanliness is one of the necessary agents to health …

—Walt Whitman

The Romans spent hours at their elaborate bathhouse complexes, but not everyone equated cleanliness with virtue …

—Sara Ivry

This cleanliness is necessary to ensure that no dust or particles end up on the silicon surface during the processing of the chip.

—Robert J. Cone

Examples of cleanliness in a Sentence

Recent Examples on the Web

Russia is making sure that cleanliness runs directly through Moscow. — Mrigakshi Dixit, Interesting Engineering, 25 June 2026

Fortunately, a few simple changes can help preserve your mattress’s comfort, cleanliness, and support for years to come. — Jamie Cuccinelli, Martha Stewart, 1 July 2026

Psychology research points to neutral air, dry surfaces and the absence of competing odors as the real markers of cleanliness. — Lauren Jarvis-Gibson, Sacbee.com, 23 June 2026

The inspector found a lack of overall cleanliness, poor handwashing practices and pest control issues, according to the city spokesperson. — Harriet Ramos, Fort Worth Star-Telegram, 3 July 2026

Word History

First Known Use

15th century, in the meaning defined above

Phrases Containing cleanliness

• cleanliness is next to godliness