ETYMOLOGY
from Latin malus (bad) + -ferous (bearing, producing)
EXAMPLE
“… I had really forgotten to mention that gallant, fine-hearted soldier, who – as I heard to my infinite regret, shared by every one who knew his kindly, honest, genial nature – fell a victim to the maliferous climate of China! …”
From: From: My Diary in India, In the Year 1858-9,
By William Howard Russell, Volume I, 1860
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Lexicophilia 