unk-unk
n.— «Aerospace-men have come down with a severe case of what they call the “unk-unks”—the “unknown unknowns.”» —“Aerospace: End of the Gravy Years” Time Mar. 9, 1970. (source: Double-Tongued Dictionary)
Further reading
Advice about college essays from the winner of a top prize for children’s literature: Kelly Barnhill encourages teens to write about experiences that are uniquely their own, from a point of view that is theirs and no one else’s. Plus, why do we say...
While compiling the Oxford English Dictionary, lexicographer James Murray exchanged hundreds of letters a week with authors, advisors, and volunteer researchers. A new collection online lets you eavesdrop on discussions about which words should be...