anti- (ant-)是希臘語(yǔ)源的前綴，它原是個(gè)介詞，意思相當(dāng)于against或opposing,即表示“相對(duì)”或“相反”。anti-最早出現(xiàn)在直接進(jìn)人英語(yǔ)的希臘單詞中，是一個(gè)只能與詞根結(jié)合的原生詞綴?，F(xiàn)在，它成了英語(yǔ)中非?；钴S的介詞性派生前綴， 能與許多名詞綴合，構(gòu)成相應(yīng)的形容詞或名詞。原生前綴ant-是anti- 的異體，用在以元音字母及h開頭的詞根或詞干之前。 它只出現(xiàn)在借詞之中。

我們先來(lái)觀察幾個(gè)anti- (ant-)與詞根綴合的例子。 

antibiotic [ anti- = opposing 反；bi =life 生命;-otic a . = having the quality of 有…性能的=> “having the quality of opposing a certain life 能與某種生物作對(duì)的”→ ]a. opposing the disease- carrying bacteria 抑制病菌的，抗生的 /Penicillin is an antibiotic substance.盤尼西林是種抗生素。 

antidote [ anti- = against 對(duì)抗；dot = given as a remedy 用來(lái)做藥 的；-e “a remedy against sth.用來(lái)對(duì)抗某物的藥”→]n . medicine that counteracts the effect of a poison 解毒藥 / Milk is an antidote for some poisons.牛奶可以解某些毒藥。

antipathy [anti- = against 反；pathy = feeling 感情=>“a feeling against sb. or sth.反對(duì)某人或某物的感情”→]n . strong dislike 反感，厭惡 / She has a strong antipathy to a snake.她非常討厭蛇。

antipathetic a. 引起反感的；素來(lái)厭惡的