Gain access to thousands of additional definitions and advanced search features—ad free! JOIN NOW
: very clean
We scrubbed the old boat until it was (as) clean as a whistle.
Share clean as a whistle
Resources for clean as a whistle
clean and jerk
clean as a whistle
Comments on clean as a whistle
What made you want to look up clean as a whistle? Please tell us where you read or heard it (including the quote, if possible).
obstinately defiant of authority
Get Word of the Day daily email!
Autumn Words of the Day 2018
Can you spell these 10 commonly misspelled words?
Test Your Knowledge - and learn some interesting things along the way.
Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!
New words that came from bigger words
A cavalcade of words for travel
Two words. One hundred years.
Words from the week of 11/9/2018
And is one way more correct than the others?
The story of an imaginary word that managed to sneak past our editors and enter the dictionary.
How to use a word that (literally) drives some people nuts.
The awkward case of 'his or her'
(Secret October WOTD Quiz)
Name that government! Or something like that.
A game of winding words.