what i'm talking about at my mini thesis, titled: behavior of accomplishing the task with perfunctory. ABSTRACT Completing the task, not only make someone who don’t know be known, or don’t understand be understood, but also can view as a shaper of caractersitic like adaptable, responsible, proactive, and how to self-regulate. Numerous way accomplishing the task, working on the task with perfunctory is one of implementation often be heard, and it’s be assumed as the opposition from character shaper. It’s catched researcher’s eyes to ask whether perfunctory task for who doing it? How about the characteristic? And what the role of this in academic live? Answering that questions, the researcher analyze this trough case study with including 17 active student at Universitas Islam “45” Bekasi. Researcher used essay, interview, and library study method in data collecting. Invention of definition from view who doing it used genus-differentia spesifica, and to find characteristic and the role of behavior be asked, used domain analysis. The answer that researcher found, definition of accomplishing task with perfunctory from a view who doing it is a way that prioritize done of the task with as one wishes or randomly. There is a seven characteristic behavior that be found, they are is, (1) everyone have a their criteria to blame their self perfunctory, (2) a field at accomplishing the task with perfunctory is different with another else, (3) is conscious behaviour, (4) more controlled of external factor and shaper predispotition from inside, (5) the decision this behavior is hindrance more bad situation and unbenefit for subject be nature (6) the behavior means an effort as minimal and fast as possible for accomplishing the task, without putting a care about certain aspects at working on the task, and (6) the objective of the behavior is short term. And besides, the role of this behavior in academic live can be seen as a shape of problem solving.