Designed to prevent, repel, or eliminate insects or bugs.
From anti- (against) + bug, which originally referred to insects but now commonly means any small pest. This is a modern marketing term that became widespread in the 20th century with pesticide development.
The term 'bug' for insects actually has a wild origin—it likely comes from the Welsh 'bwg' meaning phantom or goblin, because people were scared of the creepy things in the dark, so they named them after scary spirits.
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