Where does “lovebug” come from?

lovebug (English) comes from English Love, from Middle English love, from Old English lufu, from Proto-West Germanic *lubu, from Proto-Germanic lubō, from Proto-Indo-European lewbʰ-, from Proto-Indo-European lēw- — to sound, resound, sing out; to leave.

lovebug (English): An insect, Plecia nearctica, the honeymoon fly; A...

Definitions

  1. An insect, Plecia nearctica, the honeymoon fly; A...

Ancestry of “lovebug”, step by step

lovebug traces back through two separate lines of ancestry.

via English Love

StepLanguageWordMeaning
1EnglishLoveradiotelephony clear-code word for the letter L
2Middle Englishlovelove; strong and deep affection
3Old Englishlufulove
4Proto-West Germanic*lubulove
5Proto-Germaniclubōlove, affection
6Proto-Indo-Europeanlewbʰ-to desire, covet, want; to admire, praise; to...
7Proto-Indo-Europeanlēw-to sound, resound, sing out; to leave

via English Bug

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 lēw-Every word from Proto-Indo-European lewbʰ-Every word from Proto-Germanic lubō
lovebug — Etymology, Origin & Word History | Etymology Explorer