obliv·i·ous /-viəs/
  (a.)忘卻的,忘記的,健忘的,不注意的
  Ob·liv·i·ous a.
  1. Promoting oblivion; causing forgetfulness. “The oblivious pool.”
     She lay in deep, oblivious slumber.   --Longfellow.
  2. Evincing oblivion; forgetful.
     Through are both weak in body and oblivious.   --Latimer.
  -- Obliv*i*ous*ly, adv. -- Ob*liv*i*ous*ness, n.
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  oblivious
       adj 1: (followed by `to' or `of') lacking conscious awareness of;
              "oblivious of the mounting pressures for political
              reform"; "oblivious to the risks she ran"; "not
              unmindful of the heavy responsibility" [syn: oblivious(p),
               unmindful(p)]
       2: failing to keep in mind; "forgetful of her
          responsibilities"; "oblivious old age" [syn: forgetful]