repellent

Having the effect of repelling, physically or morally; having power to repel; able or tending to repel; repulsive.

Specifically, capable of repelling water; water-proof.

In medicine, an agent which is used to prevent or reduce a swelling. Astringents, ice, cold water, etc., are repellents.

A kind of water-proof cloth.

Driving back; able or tending to repel.