figurative and in figurative contexts. Characterized by or involving a steady decline in a person's condition or performance; deteriorating…

Falling off from vigour, excellence, or prosperity; becoming weaker or worse; failing, waning, decaying (in health, fortunes, etc.); in a decline.

Having the property of deforming or altering for the worse.

Causing or tending to deterioration.

Tending to exhaust or drain of strength, resources, etc.

That is in the process of becoming worse; deteriorating.

Of the nature of, or tending to, degeneration.