Purity, which is the absence of impurity, is a prerequisite for access to the holy or for holy status.

纯洁，不纯的反义词，是接近神圣或达到神圣状态的先决条件。

耶鲁公开课 - 旧约导论课程节选

And if you don't agree with them you just say, "I don't agree." It's the opposite of "I agree."

而如果你并不赞同其他人的说法，你可以说“I don't agree”。它是“I agree”的反义词。

I agree课堂 - SpeakingMax英语口语达人

I think the answer is to be found, or at least one answer-- the truth is there are many answers-- in that they are just terribly interesting, but that's very much of a-- what's the word I want, the opposite of objective subjective observation by me.

我想这不难回答,至少也能举出一个理由,当然实际上我们有太多的理由,那就是古希腊太有意思了,不过这个答案显得太,那个词是什么来着,客观的反义词,显得太主观了

耶鲁公开课 - 古希腊历史简介课程节选