In`of*fi"cious (?), a. [L. inofficiosus: cf. F. inofficieux. See In- not, and Officious.] 1. Indifferent to obligation or duty. [Obs.]

Thou drown'st thyself in inofficious sleep.

2. Not officious; not civil or attentive. [Obs.] Jonhson.

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.