Agnogenic (adj)
ag-noh-djen-ik
Of unknown origin or aetiology (medicine).
No, I don’t know what aetiology is either, but it’s going to be tomorrow’s WotD so we’ll all be really clever.
Example sentences
“The inflammation would appear randomly and was agnogenic with no obvious trigger being found.”
“Her rash appeared over night and refused to respond to any usual treatment methods, it’s cause is agnogenic.”

Word of the Day – Medley
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Word of the Day – Medley
Medley (noun) med-lee a mixture, especially of heterogeneous elements; hodgepodge; jumble. First recorded in 1300–50;…

Word of the Day – Hincty
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Word of the Day – Hincty
Word of the Day - Hincty (adj) hink-tee

Word of the Day – Melee
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Word of the Day – Melee
Word of the Day - Melee (noun) mel-ey

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Word of the Day – Fulciment
Word of the Day - Fulciment (noun) (archaic) ful-si-ment

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Word of the Day – Dubitation
Word of the Day - Dubitation (noun) (Archaic) doo-bit-ay-shun

Word of the Day – Numen
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Word of the Day – Numen
Word of the Day - Numen (noun) noo-men