Meaning of the word "(as) clean as a whistle" in English

What does "(as) clean as a whistle" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

(as) clean as a whistle

US /əz ˈkliːn əz ə ˈhwɪsl/
UK /əz ˈkliːn əz ə ˈhwɪsl/
"(as) clean as a whistle" picture

Idiom

1.

completely clean or spotless

Example:
After she scrubbed the kitchen, it was as clean as a whistle.
The car came back from the car wash as clean as a whistle.
2.

without any problems or difficulties; smoothly

Example:
The whole operation went as clean as a whistle.
He got through the interview as clean as a whistle, answering every question perfectly.
3.

without any illegal or immoral actions; legally and honestly

Example:
The politician's record was found to be as clean as a whistle after the investigation.
He swore his business dealings were as clean as a whistle.