your guess is as good as mine
I don't know any more than you do, as in As for when he'll arrive, your guess is as good as mine. [1920s]
QUIZZES
CAN YOU GUESS THESE WORDS FROM AROUND THE US?
American English is not always as it appears to be ... get to know regional words in this quiz!
Question 1 of 10
A bet is synonymous with a wager, but what does it mean in New York?
Words nearby your guess is as good as mine
your, Yourcenar, you're, you're telling me, you're welcome, your guess is as good as mine, yourn, yours, yourself, yours truly, yous
The American Heritage® Idioms Dictionary
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