Where does “help vampire” come from?

help vampire (English) comes from English help, from Middle English help, from Old English help, from Proto-West Germanic helpu, from Proto-Germanic helpō, from Proto-Indo-European ḱelb- — help.

help vampire (English): A person who requests answers and solutions from a community while giving nothing in return

Definitions

  1. A person who requests answers and solutions from a community while giving nothing in return

Ancestry of “help vampire”, step by step

help vampire traces back through two separate lines of ancestry.

via English help

StepLanguageWordMeaning
1EnglishhelpAction given to provide assistance; aid;...
2Middle Englishhelp—
3Old Englishhelphelp
4Proto-West Germanichelpu—
5Proto-Germanichelpōhelp, aid, assistance
6Proto-Indo-Europeanḱelb-help

via English vampire

StepLanguageWordMeaning
1EnglishvampireA mythological undead creature said to feed on...
2Frenchvampirevampire
3GermanVampirvampire
4Serbo-Croatianvàmpīrvampire
5Proto-Slavicǫpyrьvampire
Every word from Proto-Indo-European ḱelb- →Every word from Proto-Germanic helpō →Every word from Proto-West Germanic helpu →