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1. An animal, such as a leech, that sucks blood.
2. An extortionist or a blackmailer.
3. A person who is intrusively or overly dependent upon another; a parasite.

blood′suck′ing adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.bloodsucking - drawing blood from the body of another; "a plague of bloodsucking insects"
bloody - having or covered with or accompanied by blood; "a bloody nose"; "your scarf is all bloody"; "the effects will be violent and probably bloody"; "a bloody fight"
2.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"
dependent - relying on or requiring a person or thing for support, supply, or what is needed; "dependent children"; "dependent on moisture"


Of or characteristic of a parasite:
Slang: freeloading.
References in classic literature ?
At length, however, we reached the shadows of the forest, while right behind us sprang the swiftest of our pursuers--a giant plant man with claws outreaching to fasten his bloodsucking mouths upon us.
WE'RE getting to the heart of the National Health Service car parking outrage when a bloodsucking private operator slaps PS5,500 fines on a single nurse despite her buying a permit.
I've shelled out for the smelly shampoos and the fine-tooth combs and put up with all the wriggling and complaining involved in getting rid of my children's disgusting bloodsucking parasites.
You may know about fleas, vampire bats and leeches, but how about bloodsucking birds, butterflies and snails?
Together with his secret lover - the daughter of vampire king Viktor - Lucian raises an army worthy of taking on their bloodsucking oppressors, beginning a centuries-long conflict.
Lovecraft and Lord Dunsany; Spanish aspects of his work, including his Spanish-language monsters and the figure of the traumatized child and the supernatural in the Spanish civil war films; the relationship between children and the monstrous in The Devil's Backbone, Pan's Labyrinth, The Orphanage, Don't Be Afraid of the Dark, Mama, and Mimic, as well as in contrast to Hesiod's Theogony and Frankenstein; his use of insects, particularly bloodsucking bugs, as he adapts traditional European vampire narratives to Latin American contexts, previously explored by Horacio Quiroga; and alternative readings of Pan's Labyrinth in terms of Nietzsche and menstruation.
He thinks he can turn an assuming girl (Sheila Vand) but quickly learns that you shouldn't judge a bloodsucking vampire by her demure appearance.
In Kazakhstan, the study of bloodsucking midges was initiated in the 60s of the 20th century, mostly in the mountainous regions (Tien Shan and south-western Altai) [4].
Many have also criticized the fact that Fifty Shades began as Twilight fanfictionan alternate-universe (AU) version of those novels-and-movies' characters Bella and Edward, in which clumsy high-schooler Bella has become awkward college-student Ana and sparkly bloodsucking Edward has become flogger-waving billionaire dickhead Christian.
Summary: Anyone who has seen Jim Jarmusch's wry vampire comedy "Only Lovers Left Alive" will recall the scene close to the end of the movie, in which the immortal, bloodsucking lovers Adam (Tom Hiddleston) and Eve (Tilda Swinton) cease wandering the narrow alleyways of Tangier to marvel at a throaty, hypnotic performance of the love song "Hal," by Lebanese singer-songwriter Yasmine Hamdan.
A girl at Hinata Sorazono's school has been attacked, apparently by a bloodsucking monster, and everyone is at edge.
When the 24-year-old finally discovered the clot was actually a bloodsucking worm, she went to a doctor who pulled it out using a nose forceps and tweezers.