know whereof one speaks

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.

See also: know, one, speak

Common Names:

Name	Gender	Pronounced	Usage
Lexia		LEKS-ee-ə, LEKS-yə	English
Aleta		-	English
Cesarino		che-sah-REE-no	Italian
Papak		-	Ancient Persian
Wilkinson		['wilkinsn]
Tarben		-	Danish

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