know whereof one speaks

to know well the subject that one is speaking about. You are wrong! You do not know whereof you speak. He simply doesn't know whereof he speaks.

Name	Pronounced	Usage
Alissa	ə-LIS-ə	English
Netanyahu	-	Biblical Hebrew
Mariana	mə-RYA-nə (Portuguese), mah-RYAH-nah (Spanish)	Portuguese, Spanish, Romanian, Czech, Ancient Roman
Teagan	-	English (Modern)
Carlene	KAHR-leen	English
Mzia	-	Georgian