is anyone's guess

something is anyone's guess

also something is anybody's guess

no one knows the answer How the lawsuit will turn out is anybody's guess. At that point, whether he was dead or alive was anyone's guess.

Name	Pronounced	Usage
Jaromir	yah-RAW-meer	Polish
Vera (1)	VYE-rah (Russian), VEER-ə (English), VER-ə (English)	Russian, English, German, Swedish, Norwegian, Danish, Dutch, Portuguese, Italian, Spanish, Hungarian
Pierrick	-	Breton, French
Pyong-Ho	byung-ho	Korean
StÍGandr	-	Ancient Scandinavian
Zane (2)	-	Latvian