Insect repellent is a product containing chemicals that you spray into the air or on your body in order to keep insects away. mosquito repellent. very unpleasant repulsive. repellant a substance that keeps insects away insect/mosquito/bug etc repellent
the power to repel; "she knew many repellents to his advances" a chemical substance that repels animals a compound with which fabrics are treated to repel water incapable of absorbing or mixing with; "a water-repellent fabric"; "plastic highly resistant to steam and water