| unsuccessful | (adj) not successful; having failed or having an unfavorable outcome, Ant. successful |
| unsuccessfully | (adv) without success, Ant. successfully, Example: she tried unsuccessfully to persuade him to buy a new car |
| Unsuccess | n. Want of success; failure; misfortune. Prof. Wilson. [ 1913 Webster ] |
| Unsuccessful | a. Not successful; not producing the desired event; not fortunate; meeting with, or resulting in, failure; unlucky; unhappy. -- |