murderabilia en · NOUN
Etymology
From murder; modelled on words like automobilia.
Meanings
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(plural, plural-only) Items associated with a murderer, regarded as collectibles.
But in a personal sense, having these letters treated as murderabilia is appalling to us.
2007 January 22, Serge F. Kovaleski, “Unabomber Wages Legal Battle to Halt the Sale of Papers”, in New York Times: