ཧོ་འོ་ ཐག་~རིང་གི་ ཨ་~ཇོ ། རེ་~སྒུག་~གི་ ལོ་~ཟླ།
So backbiting (gheebah) is saying something negative about your brother/sister behind his/her back (i.e. without their knowledge), something which (s) he would not like.
Family, Obligation, Conflict