Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “clean”

See all translations

clean

adjective
 
 
/kliːn/
honest and fair, or showing that you have done nothing illegal or morally wrong: a clean record/report/license Job applicants must have a clean commercial driver's license. He said the campaign's priorities will be "education and clean government."
ENVIRONMENT free of, or producing no harmful chemicals or substances: clean energy/fuel/technology clean energy from renewable sources such as solar and wind power clean air/water/soil
have clean hands informal to have never been involved in a dishonest or illegal activity: An audit proved that neither company had clean hands when it came to reporting profits.
(Definition of clean adjective from the Cambridge Business English Dictionary © Cambridge University Press)
What is the pronunciation of clean?
Add Cambridge dictionaries to your browser to your website

Definitions of “clean” in other dictionaries

Word of the Day

hyphen

the symbol -, used to join two words together, or to show that a word has been divided into two parts at the end of one line and the beginning of the next

Word of the Day

Lies, lies, lies!

by Kate Woodford,
February 25, 2015
​​​ According to sociologists (=people who study the relationships between people living in groups), we are good at lying. As a species, we have developed a remarkable ability to deceive each other (= persuade each other that something false is true). Being able to say things that are not true can help with

Read More 

snapchat verb

March 02, 2015
to send someone a message using the photomessaging application Snapchat We used to have a thing until he got a girlfriend. now

Read More