your guess is as good as mine

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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]

QUIZ

ARE YOU A TRUE BLUE CHAMPION OF THESE "BLUE" SYNONYMS?

We could talk until we're blue in the face about this quiz on words for the color "blue," but we think you should take the quiz and find out if you're a whiz at these colorful terms.

Question 1 of 8

Which of the following words describes “sky blue”?

navy

beryl

azure

TAKE THE QUIZ TO FIND OUT

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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

How to use your guess is as good as mine in a sentence

As an example of good science-and-society policymaking, the history of fluoride may be more of a cautionary tale.
Anti-Fluoriders Are The OG Anti-Vaxxers|Michael Schulson|July 27, 2016|DAILY BEAST
The speaker conjures up centuries of collective sagacity, aligning oneself with an eternal, inarguable good.
Politicians Only Love Journalists When They're Dead|Luke O’Neil|January 8, 2015|DAILY BEAST
I think everybody would like to be handsome and good at karate.
‘Archer’ Creator Adam Reed Spills Season 6 Secrets, From Surreal Plotlines to Life Post-ISIS|Marlow Stern|January 8, 2015|DAILY BEAST
There was a lot of prison fiction from movies and books to mine.
‘Archer’ Creator Adam Reed Spills Season 6 Secrets, From Surreal Plotlines to Life Post-ISIS|Marlow Stern|January 8, 2015|DAILY BEAST

Petty, shade, and thirst are my favorite human “virtues” and the trifecta of any good series of “stories.”
‘Empire’ Review: Hip-Hop Musical Chairs with an Insane Soap Opera Twist|Judnick Mayard|January 8, 2015|DAILY BEAST
We resolved to do our best to merit the good opinion which we thus supposed them to entertain of us.
Blackwood's Edinburgh Magazine, No. CCCXXXIX. January, 1844. Vol. LV.|Various
And with some expressions of mutual good-will and interest, master and man separated.
The Posthumous Papers of the Pickwick Club, v. 2(of 2)|Charles Dickens
She did not need a great cook-book; She knew how much and what it took To make things good and sweet and light.
Boys and Girls Bookshelf; a Practical Plan of Character Building, Volume I (of 17)|Various
Kind of a reception-room in there—guess I know a reception-room from a hole in the wall.
Boys and Girls Bookshelf; a Practical Plan of Character Building, Volume I (of 17)|Various
The Seven-score and four on the six middle Bells, the treble leading, and the tenor lying behind every change, makes good Musick.
Tintinnalogia, or, the Art of Ringing|Richard Duckworth and Fabian Stedman