Lenitive

Part of speech: noun (n.)

1. A medicine or application that has the quality of easing pain or protecting from the action of irritants.

2. A mild purgative; a laxative.

3. That which softens or mitigates; that which tends to allay passion, excitement, or pain; a palliative. There is one sweet Lenitive at least for evils, which Nature holds out; so I took it kindly at her hands, and fell asleep. Sterne.

Part of speech: adjective (a.)

Having the quality of softening or mitigating, as pain or acrimony; assuasive; emollient.