know-nothing

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A completely ignorant, uninformed, or unknowledgeable person. I wish my father had never hired a know-nothing like you to manage our accounts!

Name	Pronounced	Usage
Persephone	pər-SEF-ə-nee (English)	Greek Mythology
Deanne	dee-AN	English
Cai (1)	-	Swedish, Norwegian, Danish
Mozes	-	Dutch
Sraosha	-	Persian Mythology
Cordula	-	German