(adj)

The highly frequently needed adjective to describe the neighbor: who borrows everything and never returns anything; who drinks your beer, wine and booze, but never reciprocates; who hides inside until you have completed the shared yard cleaning, snow shoveling, and similar tasks; who blames you for any problems with their property, life, vehicles or pets; whose pet(s)defecate(s) not on their grass but on yours... causing it to yellow and die in the summer heat; vocally complains to other neighbors about anything that you haven't done for them today; and finally, who drives an eco-friendly vehicle while glaring at you with pompous disdain for not bowing down to them for their eco-superiority.

Term can also apply to countries, and geographically adjoining regions. British/Canadian spelling neighbourleech.