Quick answer: “Come Clean” means admit the truth, especially after hiding or denying it.
Come clean — to admit the truth about something, especially after a period of deception, concealment, or denial.
Origin & History
The phrase uses the metaphor of cleanliness to represent honesty and moral integrity. To "come clean" is to wash away deception and present yourself truthfully. The idiom has been in use in American English since at least the early 20th century, appearing in crime fiction and journalism to describe a suspect or wrongdoer who finally confesses. It spread into general use through the 20th century.
Today it is used in a wide range of contexts — not just crime, but relationships, business, and personal matters. It implies relief as well as honesty: coming clean removes the burden of maintaining a lie or a secret. Idioms like this are the kind of expression documented in general reference works such as the Cambridge Dictionary, which record how figurative meanings develop in everyday English.
Example Sentences
| Sentence | Context |
|---|---|
| "He finally came clean about where the money had gone." | Financial confession |
| "She came clean to her parents about skipping school." | Admitting wrongdoing |
| "The company came clean about the data breach after pressure from regulators." | Corporate disclosure |
| "I think it's time to come clean — I wasn't at the office when you called." | Personal confession |
| "After years of silence, he came clean about his role in the incident." | Delayed honesty |
| "She felt so relieved after coming clean about the mistake to her manager." | Emotional relief |
Use It in Conversation
Dialogue Example
Jack: You've seemed stressed all week. What's going on?
Amy: Okay, I'll come clean. I accidentally sent the wrong file to the client on Monday.
Jack: Thank you for telling me. Let's figure out how to fix it together.
How to Use It
This idiom is informal to neutral. It is often followed by "about" + the topic: "come clean about the decision". The past tense is "came clean". It implies honesty after a period of concealment, which is why it often carries a sense of relief or courage.
Common Mistakes
Mistakes to Avoid
He came clear about the mistake.
He came clean about the mistake. — The word is "clean", not "clear".
She come clean yesterday.
She came clean yesterday. — Use the past tense "came", not "come".
Similar Idioms
Practise This Idiom
Want to understand the grammar behind this? Explore our Grammar guides.
Quick Check: Come Clean
2 questions — test what you just learned.
1. What does “Come Clean” mean?
2. Complete the sentence: “"I think it's time to _____ — I wasn't at the office when you called."”
Frequently Asked Questions
What does "come clean" mean?
"Come clean" means to admit the truth about something, especially after you have been hiding it, denying it, or keeping it secret. It implies honesty after a period of concealment.
Where does "come clean" come from?
The phrase uses the metaphor of washing away dishonesty. To "come clean" is to present yourself honestly, free from deception. It entered American English in the early 20th century through crime fiction and journalism.
Can you give an example of "come clean" in a sentence?
Example: "He finally came clean about where the money had gone." It suggests a long-awaited and perhaps difficult admission of the truth.
Is "come clean" formal or informal?
The idiom is informal to neutral. It is very common in conversation and journalism. Avoid it in formal legal or academic writing.
What CEFR level is "come clean"?
Typically B2 (Upper-Intermediate). It is widely used in spoken English, news reports, and fiction.
Is "come clean" always about a serious matter?
No. It can describe minor admissions (forgetting to do something) as well as serious ones (financial wrongdoing). The tone is determined by context.
What idioms are similar to "come clean"?
Similar expressions include "spill the beans" (reveal a secret), "let the cat out of the bag" (accidentally reveal something), and "own up" (admit responsibility for something wrong).
How do I practise "come clean"?
Write a short paragraph describing a character who has been hiding something and finally decides to come clean. Then use LexFizz Flash Cards to reinforce the phrase.
Can "come clean" be used in positive contexts?
Generally, yes — coming clean is viewed as a positive, brave act. The person who comes clean is usually seen as more honest and trustworthy as a result.
Is "come clean" used the same way in British and American English?
Yes. "Come clean" is used with the same meaning in both British and American English, though it originated in American usage and is slightly more common there.