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

1.
pulito come un fischio, immacolato
completely clean or spotless
:
•
After she scrubbed the kitchen, it was as clean as a whistle.
Dopo aver pulito la cucina, era pulita come un fischio.
•
The car came back from the car wash as clean as a whistle.
L'auto è tornata dall'autolavaggio pulita come un fischio.
2.
liscio come l'olio, senza intoppi
without any problems or difficulties; smoothly
:
•
The whole operation went as clean as a whistle.
L'intera operazione è andata liscia come l'olio.
•
He got through the interview as clean as a whistle, answering every question perfectly.
Ha superato l'intervista senza problemi, rispondendo perfettamente a ogni domanda.
3.
pulito come un fischio, onesto, legale
without any illegal or immoral actions; legally and honestly
:
•
The politician's record was found to be as clean as a whistle after the investigation.
Il curriculum del politico è risultato pulito come un fischio dopo l'indagine.
•
He swore his business dealings were as clean as a whistle.
Ha giurato che i suoi affari erano puliti come un fischio.