tell which is which

To be able to identify or distinguish two similar or identical people or things. Tom and his twin always dress so similarly, so I never can tell which is which. I know that the two formats look very much alike, but you really ought to be able to tell which is which by this point.

See also: tell

Farlex Dictionary of Idioms.

See also:

know which is which
which is which
tell things apart
tell (someone or something) apart
tell apart
tell people or things apart
keep (two or more people) straight (in one's mind/head)
keep people straight
tell the difference between
tell the difference between (someone or something)

词组	tell which is which
释义	tell which is which tell which is which To be able to identify or distinguish two similar or identical people or things. Tom and his twin always dress so similarly, so I never can tell which is which. I know that the two formats look very much alike, but you really ought to be able to tell which is which by this point. See also: tell Farlex Dictionary of Idioms. See also: know which is which which is which tell things apart tell (someone or something) apart tell apart tell people or things apart keep (two or more people) straight (in one's mind/head) keep people straight tell the difference between tell the difference between (someone or something)
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