fight against or resist strongly; "The senator said he would oppose the bill"; "Don't fight it!"
If you fight back against someone or something that is attacking or harming you, you resist them actively or attack them. The teenage attackers fled when the two men fought back We should take some comfort from the ability of the judicial system to fight back against corruption
If you fight back an emotion or a desire, you try very hard not to feel it, show it, or act on it. She fought back the tears
A fightback is an effort made by a person or group of people to get back into a strong position when they seem likely to lose something such as an election or an important sports match. The West Indies have staged a dramatic fightback on the first day of the fifth test. an attempt by someone to get back to a position of strength after they have lost it, especially in sport