'bug-resistant' originates from the combination of 'bug,' referring to insects, and 'resistant,' from Latin 'resistere,' meaning 'to withstand.'

'resistere' transformed into the Old French word 'resister,' and eventually became the modern English word 'resist,' which forms part of 'resistant.'

Initially, 'resistant' meant 'to withstand or oppose,' and this meaning has largely remained the same in modern usage.