1. a substance that drives away or keeps away insects or other pests

1. serving to drive away or repel

Examples

• She sprayed insect repellant on her arms before going camping.
• The mosquito repellant kept the bugs away all evening.
• We need a good deer repellant for the garden.
• The repellant smell of the chemical made everyone leave the room.
• His repellant behavior drove away potential friends.
• The fabric has repellant properties that resist water and stains.