Where does “bug” come from?

bug (Portuguese) comes from English Bug, from English bugge, from Middle English bugge, from Proto-Germanic bugja-, from Proto-Indo-European bʰew- — to grow, swell; to swell, wax, grow; to blow; to...

bug (Portuguese): bug; anything causing unusual behaviour

Definitions

  1. bug; anything causing unusual behaviour

Ancestry of “bug”, step by step

StepLanguageWordMeaning
1EnglishBugA Volkswagen Beetle car; A Bugatti car
2Englishbuggebeetle
3Middle Englishbuggebogy, hobgoblin, bugbear; scarecrow
4Proto-Germanicbugja-swollen up, thick
5Proto-Indo-Europeanbʰew-to grow, swell; to swell, wax, grow; to blow; to...
Every word from Proto-Indo-European bʰew- →Every word from Proto-Germanic bugja- →Every word from Middle English bugge →