bloodsucker
[noun]
Synonyms: parasite, barnacle, freeloader, hanger-on, leech, lounge lizard, spiv, sponge, sponger, sucker

[TahlilGaran] English Synonym Dictionary ▲

blood‧suck‧er /ˈblʌdˌsʌkə $ -ər/ noun [countable]

1. a creature that sucks blood from the bodies of other animals

2. informal someone who always uses other people’s money or help – used in order to show disapproval

[TahlilGaran] Dictionary of Contemporary English ▲