fight sb/sth ↔ off phr v [T] 1 to fight someone who is attacking you and make them go away 击退: They managed to fight off their attackers. 他们成功击退了进攻者。 2 to get rid of a feeling or illness 摆脱〔感受〕; 治愈〔疾病〕: I can't seem to fight off this cold. 这场感冒我似乎痊愈不了。