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
Oluchi	-	Western African, Igbo
Kashi	-	Indian, Hindi
Narcisa	-	Portuguese, Spanish, Italian, Romanian
AndraŽ	-	Slovene
Tomoko	to-mo-ko	Japanese
Tad	TAD	English