"bloodsucking" in the adjective sense
1. bloodsucking
drawing blood from the body of another
"a plague of bloodsucking insects"
2. parasitic, parasitical, leechlike, bloodsucking
of plants or persons having the nature or habits of a parasite or leech living off another
"a wealthy class parasitic upon the labor of the masses"
"parasitic vines that strangle the trees"
"bloodsucking blackmailer"
"his indolent leechlike existence"
Source: WordNet® (An amazing lexical database of English)
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