One who or that which degenerates or causes degeneration.
From degenerate (to decline or deteriorate) + -er (agent suffix). This is a rare or archaic form; modern usage favors 'degenerate' as a noun.
The term 'degener' is almost extinct in modern English, replaced by 'degenerate' used as a noun, showing how English continually simplifies and streamlines its vocabulary over time.
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