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addaword.gifdefinition of unknown unknown

noun
something that you don't know you don't know
Helping your team turn unknown unknowns into known unknowns is, while much harder, probably one of the best things you can do.
Submitted from United Kingdom on 09/07/2014 18:38:00
Definition of unknown unknown from the Open Dictionary – a public resource hosted by Macmillan English Dictionary Online

protologism

a new word or phrase invented in the hope that it will become generally used

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