anybody's/anyone's guess

noun

: something that is very uncertain or that no one knows

What causes these changes is anybody's guess.

It's anyone's guess what his next book will be about.

Examples of anybody's/anyone's guess in a Sentence

Recent Examples on the Web

As for how Trump will be received by the fans at MSG, well, that's anybody's guess. — Matt Reigle Outkick, FOXNews.com, 6 June 2026

Whether Evgeni Malkin gets a chance to be a part of it is anyone's guess. — CBS News, 2 May 2026

Where that kind of money would come from is anybody's guess, but the cycling community is determined to hold transportation leaders to their commitments. — John Ramos, CBS News, 25 Apr. 2026

What happens at the end of tonight's ceremony is anyone's guess. — Daniel Arkin, NBC news, 15 Mar. 2026