which is which

idiom

Definition of which is which

used to say that one is unsure about the identity of each member of a groupOne of the twins is named John and the other William, but I don't know which is which?

Learn More about which is which

Statistics for which is which

Cite this Entry

“Which is which.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/which%20is%20which. Accessed 22 Sep. 2020.

Comments on which is which

What made you want to look up which is which? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

Test Your Vocabulary

Homophone Quiz

  • three bears two of them look like theyre whispering to a third bear who looks chuffed to be the center of attention
  • In order to judge how people felt, the senator's office hired a firm to take a ______.
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Bee Cubed

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!