horrible, awful, hellish, agonizing
nasty, repellent.
Remarkable, unbelievable, unusual.
Repulsive, inspiring aversion.
Resistant or impervious to something.
Tending or able to repel; driving back.
Someone who repels.
A substance used to repel insects, other pests, or dangerous animals.
A substance or treatment for a fabric etc to make it impervious to something.