repellent /ɹəˈpɛlənt/adjective 3noun 3forms 3 adjective3 •Repulsive, inspiring aversion.The mixture of whey, beetroot juice, and spirulina seems repellent to me. •Resistant or impervious to something.All that fabric's supposed to be dust-repellent. •Tending or able to repel; driving back.These particles exercise a-highly repellent force. noun3 •A substance or solution used to repel insects, dangerous animals, or other pests.None of the mosquito repellents we've tried work. •A substance or treatment for a fabric etc to make it impervious to something.They applied dirt repellent to the sports car. •(no longer used) Someone or something that repels. formsrepellents · more repellent · most repellent