unsuccessful, a.1(Gnó) mírathúil, gan rath. Unsuccessful attempt, iarracht f in aisce. The negotiations were unsuccessful, theip, chinn, ar an margáil. 2(Duine) mí-ámharach, mírathúil; (iarrthóir) teipthe. He was unsuccessful, níor éirigh leis. ►unsuccessfully, adv.Go mírathúil, gan rath, gan ádh, gan éirí leis; in aisce.