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.

Name	Pronounced	Usage
Issachar	IS-ə-kahr (English)	Biblical
Gorgi	-	Macedonian
Foreman	['fɔ:mən]
Anneliese	ah-ne-LEE-zə (German), ahn-nə-LEE-sə (Dutch)	German, Dutch
Mercurius	-	Roman Mythology
Glory	GLAWR-ee	English (Rare)