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
Christopher	['kristəfə]
Nichole	ni-KOL	English
Asia (1)	AY-zhə (English), AH-zyah (Italian)	English (Modern), Italian (Modern)
Robyn	['rɔbin]
Aldith	-	Medieval English
Ginnie	JIN-ee	English