汉：来源于希腊语，意为"against,opposite"注意anti和前面提到的ante的含义完全不同。还需特别注意的是，anti在元音字母和辅音字母h前时,字母i脱落，变成ant,ante的省略形式也是ant,注意区别二者，与pro-意思相反。 anti-最早出现在直接进入英语的希腊单词中，是一个只能与词根结合的原生词缀。现在，它成了英语中非常活跃的介词性派生前缀，能与许多名词缀合，构成相应的形容词或名词。原生前缀ant-是anti-的异体，用在以元音字母及h开头的词根或词干之前，它只出现在借词中。

英：word-forming element meaning "against, opposed to, opposite of, instead," from Old French anti- and directly from Latin anti-, from Greek anti "against, opposite, instead of," also used as a prefix, from PIE *anti "against," also "in front of" (see ante). It appears in some words in Middle English but was not commonly used in word formations until modern times. 1.antagonist
n.person struggling against another,opponent敌手，对手；反对者 （对立争斗的人）*ant 例句：A story is not complete these days without an antagonist.如今，人们觉得一个没有对手的故事是不完整的。

2.antagonize
v.make an enemy of somebody,irritate into conflict 敌对，引起矛盾 *ant 例句：Malaysia's obstinacy is beginning to antagonize even its allies in ASEAN.马来西亚的顽固已经开始导致东南来的国家联盟其他成员的反对。

3.antibody
n.substance formed in the blood tending to inhibit or destroy harmful bacteria,etc.抗体，解毒素 *anti(=against)
例句：Scientists are finding ways to extract antibodies rfom pigs and use them in medicines for humans.科学家正在研究如何从猪的身上提取抗体，并将之制成人类可以服用的药物。

4.antonym
n.opposite(<->synonym)反义词 *anti(=against),onym(=word,name)
例句："Cooperative" is one antonym of "intransigent".“协作的”是“不妥协的”的反义词之一。

5.antithesis
n. contrast,direct opposite 对照，对立面 *anti(=against),thes(=put)
例句：Foster sees government as the antithesis to freedom.福特斯把政府看成自由对立面。