संस्‍कृतशब्‍दकोशः

अनुपकारिन्

उपकार या भलाई न करने वाला

not doing a friendly service

Monier–Williams

अनुपकारिन् — {an-upakārin} mfn. not assisting, disobliging, ungrateful, not making a return for benefits received##unserviceable, useless