repellent
n. C2 Proficiency US //ɹɪˈpɛɫənt// UK //ɹɪpˈɛlənt// re·pel·lent
n. a substance that keeps something away from you. In physics, it is a force that pushes two things apart instead of pulling them together.
n. a substance or force that causes a physical or chemical reaction to drive something away. In physics, it refers to a force that acts to increase the distance between two objects.
The strong smell of the insect repellent keeps the bugs away.
The chemical used as a mosquito repellent contains a substance that insects find unpleasant and avoid.
From Latin repellēns. Equivalent to repel + -ent.