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
Pandora	pan-DAWR-ə (English)	Greek Mythology
Greig	GREG	Scottish
Edda (1)	ED-dah	Italian
Daan	DAH:N	Dutch
Roberta	[rəu'bə:tə]
Arber	['a:rbə]