'Unsuccessfully' definitions:

Definition of 'unsuccessfully'

From: WordNet
adverb
Without success; "she tried unsuccessfully to persuade him to buy a new car" [ant: successfully]

Definition of 'Unsuccessfully'

From: GCIDE
  • Unsuccessful \Un`suc*cess"ful\, a. Not successful; not producing the desired event; not fortunate; meeting with, or resulting in, failure; unlucky; unhappy. -- {Un`suc*cess"ful*ly}, adv. -- {Un`suc*cess"ful*ness}, n. [1913 Webster]