bloodsucking

adj

1. (not-comparable)That draws off the blood of another animal, or a person.

   “Bedbugs win neither praise for their sophisticated technique, nor very much respect for the fact that they don’t carry diseases, as most bloodsucking human ectoparasites do.”

2. (broadly, not-comparable)parasitic, leechlike or freeloading

noun

1. (countable, uncountable)Parasitic, leechlike behavior.

   “Economic blood-sucking of the Indian peoples, who are forced to pay immense sums of money to sustain rich Indian Civil Servants”