1. (of an idea or opinion) formed beforehand; especially without evidence or through prejudice: certain preconceived notions.
（意见或观点）提前形成的；尤指没有依据或有偏见的：某一先入为主的意见。
preconceived opinion的反义词
2. He held to his preconceived opinion despite the new evidence.
尽管有新的证据，他还是坚持他的先入为主的看法。
danci.911cha.com
3. The second mark of faith is that it has to give up all its preconceived opinion and to bow before the word of God.
信心第二个标记，乃是必须放弃所有的成见，并且在神话语跟前俯伏。