treacheryKK [ˋtrɛtʃɚi] /ˈtɹɛtʃɚi/發音名詞1背叛、變節、背信棄義He never forgave his friend's treachery during the campaign.他始終無法原諒朋友在那場選戰中的背叛。2險惡、危險文言Climbers underestimate the treachery of the mountain in winter.登山客往往低估了這座山冬季的險惡。