From Longman Dictionary of Contemporary Englishan open mindan open mindINDEPENDENT PERSONif you have an open mind, you deliberately do not make a decision or form a definite opinion about something It’s important to keep an open mind as you study the topic. → open
Examples from the Corpus
keep an open mind• Still, it was as well to keep an open mind.• We must keep an open mind about the possible presence of ores.• I think you should keep an open mind and enjoy being with people.• Until the Profitboss makes a decision, he keeps an open mind as to what that decision might be.• While keeping an open mind, most archaeologists remain extremely doubtful.• Before he resolves a problem, he keeps an open mind on how that problem might be resolved.• Police Commission members have vowed to keep an open mind on the finalists.• In interviews after their inaugural meeting last Thursday, all vowed to keep an open mind on whoever comes before the panel. 