take a guess

and hazard a guess; make a guess

to guess. Even if you don't know, please take a guess. If you don't know the answer, hazard a guess.

Name	Pronounced	Usage
Poppy	PAH-pee	English (British)
ĽUbica	-	Slovak
Nkechinyere	-	Western African, Igbo
Kerr	-	Scottish, English (Rare)
Claude	[klɔ:d]
Calvin	KAL-vin	English