scientific wild ass guess

and SWAG

phr. & comp. abb. a simple guess. (Often objectionable.) I don’t know at all. That was a SWAG. I always use the SWAG system.

Name	Pronounced	Usage
Martti	MAHRT-tee	Finnish
Vyacheslav	vya-chye-SLAHF (Russian), vya-chee-SLAHF (Russian)	Russian, Ukrainian
Alger	['ældʒə]
Rheinallt	-	Welsh
Wren	REN	English (Rare)
Tomislav	-	Croatian, Serbian, Slovene, Medieval Slavic