It's anybody's guess

No one knows, so anyone's guess is as good as anyone else's. A: When will the messenger be here? B: It's anybody's guess.

Name	Pronounced	Usage
Eadweard	-	Anglo-Saxon
Rock	[rɔk]
Venera	vye-NYE-rah (Russian), vee-NYE-rah (Russian)	Russian, Bulgarian, Albanian
Lucianus	-	Ancient Roman
Amaryllis	am-ə-RIL-is (English)	Literature
Bosse	-	Swedish