inofficious
  (a.)無職務的,無用的,不盡道德上義務的
  In·of·fi·cious a.
  1. Indifferent to obligation or duty. [Obs.]
     Thou drown'st thyself in inofficious sleep.   --B. Jonson.
  2. Not officious; not civil or attentive. [Obs.]
  3.  Law Regardless of natural obligation; contrary to natural duty; unkind; -- commonly said of a testament made without regard to natural obligation, or by which a child is unjustly deprived of inheritance. “The inofficious testament.” --Blackstone. “An inofficious disposition of his fortune.” --Paley.
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