Source : Webster's Revised Unabridged Dictionary (1913)

Ineffectively \In`ef*fect"ive*ly\, adv.
   In an ineffective manner; without effect; inefficiently;
   ineffectually.

Source : WordNet®

ineffectively
     adv : in an ineffective manner; "he dealt with the problem rather
           ineffectively" [syn: {inefficaciously}] [ant: {efficaciously},
            {efficaciously}]