If being close minded is the opposite then it would be "having a mind that is not receptive to new ideas or arguments". Now that we have precise definitions then we can explore what it means to be open minded and also some of the suggestions already given.
First it has been asked how open mindedness relates to the desire to be right. The desire to be right is actually in direct opposition to the desire to be open minded. This is because established ideas have already been tested. Therefore established ideas are more likely to be correct and any person with a strong desire to be right should stick only to established ideas. New ideas are untested and therefore have a high probability of being incorrect. Any person who behaves logically and has a strong desire to be right is therefore close minded.
In another post it has been suggested that a "scientific mind" is an open mind. Well this depends on what one means by a scientific mind. If person A is open to new hypotheses and wants to test the merit of them then they are open minded. If person B studies science heavily only to find out established facts and disregard everything else then they are close minded. Both person A and person B could describe themeselves as scientificially minded and therefore being scientifically minded is irrelevant to being open minded due to the ambiguity of the phrase "scientifically minded".
The suggestion that a scientific mind means an open mind also ignores situations that have nothing to do with science. Will an interest in physics teach a person to be open to new fashion trends? Will studying psychology lead a person to try an unusual new dish? Of course not. Not only is it misleading to suggest science correlates to an open mind but it is often irrelevant.
The confusion here comes from the fact that new science relies on open mindedness. A person must be open to new ideas to discover something new. However open mindedness does not rely on science. If open mindedness can be taught then it would either come from sources which actively teach a person to listen to others (parents, kindergarten, or religion) or from sources which encourage creativity (such as various arts).
Now you may be asking "is it healthy to have a totally open mind?" That is an entirely different question. For that one must first define what it means to be healthy. However I think after examining what it means to have an open mind in the extreme most will conclude that it is not healthy to have an extremely open mind at the expense of other attributes.
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I was too lazy to read the whole thing, so forgive me if I'm repeating someone else's point.
I often hear the misconception that being open-minded means considering all possibilities as equal, which I believe is false. I get this often from religious debates. To me, being open-minded simply means that, given adequate evidence countering a claim you made, you accept your initial claim to be false. This can be for anything.
For example: If, during a religious debate, you proclaim yourself to be an atheist due to the evidence you currently have, you are not being close-minded. However, if you found reasonable evidence that proves the existence of God, and you don't reevaluate your stance, you are being close-minded.
Basically, an open-minded person is open to the truth, regardless of whether or not it clashes with their current opinions or ideals.
The opposite of "open" as a verb may be "close", but as an adjective, as in the word "open-minded", the opposite is most definitely closed-minded.
Simulatedworld has just demonstrated what it means to be an idiot. Before we change this tone - because nothing productive is being accomplished. Let's dissect what he has done wrong - got my own amusement
I asked in your own words, that means, does not imply individual understanding. It flat out means it. Quoting the dictionary earns you a fail. Also, beating around the bush does not answer the question. It just prolongs it with fluff.
ESTP - Definition: "Love" is making a shot to the knees of a target a 120 km away, with an aratech sniper rifle and tri-light scope.