Antonyms of adv successfully

1 sense of successfully

Sense 1
successfully -- (with success; in a successful manner; "she performed the surgery successfully")
       Antonym of unsuccessfully (Sense 1)
      => unsuccessfully -- (without success; "she tried unsuccessfully to persuade him to buy a new car")

Synonyms of adv successfully

1 sense of successfully

Sense 1
successfully -- (with success; in a successful manner; "she performed the surgery successfully")