palliative

Tending or serving to palliate.

Alleviating the symptoms of a disease or disorder, especially one that is terminal, when a cure is not available.

One that palliates, especially a palliative drug or medicine.

Palliating; extenuating; serving to extenuate by excuses or favorable representation.

Mitigating or alleviating, as pain or disease.

That which extenuates: as, a palliative of guilt.

That which mitigates, alleviates, or abates, as the violence of pain, disease, or other evil.

Serving to palliate; serving to extenuate, mitigate, or alleviate.

That which palliates; a palliative agent.

Minimising the progression of a disease and relieving undesirable symptoms for as long as possible, rather than attempting to cure the (usually incurable) disease.