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
Binyamin	bee-nyah-MEEN (Jewish)	Hebrew, Arabic, Biblical Hebrew
Sevan	-	Armenian
Alke	-	Frisian
Marlen (2)	-	German
Owen (1)	O-ən (English)	Welsh, English
Vinal	-	English (Rare)