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
ÉTienne	e-TYEN (French), e-TSYEN (Quebec French)	French
PranciŠKus	-	Lithuanian
Akachi	-	Western African, Igbo
Giacomo	JAH-ko-mo	Italian
Heath	[hi:θ]
Gisilfrid	-	Ancient Germanic