Definition of unsuccessful adjective from the Oxford Advanced Learner's Dictionary



BrE BrE//ˌʌnsəkˈsesfl//
; NAmE NAmE//ˌʌnsəkˈsesfl//
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not successful; not achieving what you wanted to His efforts to get a job proved unsuccessful. They were unsuccessful in meeting their objectives for the year. She made several unsuccessful attempts to see him. opposite successfulExtra examples He had been an unsuccessful amateur jockey when he was young. The secret service had been remarkably unsuccessful at catching spies. Unsuccessful applicants will be informed by post. We have been unsuccessful in finding a replacement for her.
See the Oxford Advanced American Dictionary entry: unsuccessful