Antonyms of adv unsuccessfully

1 sense of unsuccessfully

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

Synonyms of adv unsuccessfully

1 sense of unsuccessfully

Sense 1
unsuccessfully -- (without success; "she tried unsuccessfully to persuade him to buy a new car")