1918, in the meaning defined above
Keep scrolling for more
Share dirty pool
Time Traveler for dirty pool
See more words from the same year
From the Editors at Merriam-Webster
A Retrospect Of Words From 1918
A centennial celebration
dirty old man
Cite this Entry
“Dirty pool.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dirty%20pool. Accessed 31 Jul. 2021.
More from Merriam-Webster on dirty pool
Thesaurus: All synonyms and antonyms for dirty pool
See Definitions and Examples »
Get Word of the Day daily email!
Difficult Spelling Words Quiz
Can you spell these 10 commonly misspelled words?
Spell words. Make bears.
Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!
Top 10 Latin Phrases
Helping you navigate the road ahead
Let there be no delusion
Pulchritudinous and many more
A simple trick to keep them separate
How 'literally' can mean "figuratively"
How to use a word that (literally) drives some pe...
The awkward case of 'his or her'
How many do you know?
How many can you recall?