- - Inconnu.
- - Hidden, concealed
- - Nameless drunk now needs clothes
- - Perhaps Y-fronts of Uncle Neil keep nothing concealed these days
- - "This is ... territory for me" (something new)
- - Unidentified, obscure
- - Secret organisation in the public eye?
- - Organisation is familiar with the mysteries of the world, for example
- - x, y or z, possibly
- - Strange — obscure
- - Neil Young "...... Legend"
- - Completely obscure
- - Something that is not recognised
- - Not familiar
- - Organisation is familiar with the mysteries of the world
- - Mysterious nun crazy about king now
- - An x, y or z is this kind of number in traditional algebra
- - Why when spoken is variable
- - x, say, in algebra
- - Undetermined
- - Unidentified flustered nun ringing king at once
- - Unidentified
- - Not identified
- - Not famous
- - Hardly a celebrity
- - Something to solve for, in algebra
- - Like X
- - X, in algebra
- - With 41 Across, enshrined hero
- - Like the planet Pluto before 1930
- - X, in math
- - Arlington soldier
- - Incalculable
- - Opposite of 1 Down
- - Far from famous
- - Anonymous
- - See note
- - X, at times
- - Obscure
- - Unfamiliar
- - Some of the junk now necessary is unfamiliar
- - variable to be solved in math
- - Mystery or enigma
- - Flowers laid here: Tomb of the ...... Warrior
- - Not heard of
- - Nameless.
- - Something mysterious or unfamiliar
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- [ Other definitions ]