敗退はいたい Common Noun Irregular Intransitive English jmdict 1 noun (common) (futsuumeishi) noun or participle which takes the aux. verb suru intransitive verb being defeated;being eliminated (from competition) ヒンギスが一回戦敗退の大番狂わせ。 It was a big upset when Hingis was eliminated in the first round.