资料来源 : Webster's Revised Unabridged Dictionary (1913)

Inobservant \In`ob*serv"ant\, a. [L. inobservans. See {In-} not,
   and {Observant}.]
   Not observant; regardless; heedless. --Bp. Hurd. --
   {In`ob*serv"ant*ly}, adv.