unsuccessfully
/ˌʌnsəkˈsɛsfəli/ adverb B2- Not successfully; without success; to no avail.
From the library
Anne laughed and tried unsuccessfully to withdraw her hand.
They were confined for the evening at different tables; and she had nothing to hope, but that his eyes were so often turned towards her side of the room, as to make him play as unsuccessfully as herself.
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