anybody's/anyone's guess

anybody's/anyone's guess

Uncertain or unknown. Why dogs and cats hate each other is anybody's guess. No one has been able to determine why my daughter has been having nightmares—apparently, it's anybody's guess.
See also: guess
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

anyone's guess

Something that no one knows for sure, as in Will it rain next Sunday? That's anyone's guess. [Mid-1900s] Also see your guess is as good as mine.
See also: guess
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

anyone's guess

a totally unpredictable matter. informal
1999 Jason Elliot An Unexpected Light The most likely scenario was a government alliance with the forces of the north, although it was anyone's guess how long such a Faustian pact might last.
See also: guess
Farlex Partner Idioms Dictionary © Farlex 2017

ˈanybody’s/ˈanyone’s guess

(informal) nobody knows: Who will win the next game is anybody’s guess.
See also: guess
Farlex Partner Idioms Dictionary © Farlex 2017
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