1. rule out - Verb
2. rule out - Phrase
make impossible, especially beforehand
dismiss from consideration or a contest
include or exclude by determining judicially or in agreement with rules
Source: WordNetI do not rule out the possibility of being prime minister of India one day, but there is still time. Lalu Prasad Yadav
Don't rule out working with your hands. It does not preclude using your head. Andy Rooney
Like 'real', 'free' is only used to rule out the suggestion of some or all of its recognized antitheses. As 'truth' is not a name of a characteristic of assertions, so 'freedom' is not a name for a characteristic of actions, but the name of a dimension in which actions are assessed. J. L. Austin
At the first stages of negotiations, we will not release prisoners with blood on their hands. However, as part of a final agreement, I do not rule out this option. Offering hope for a better future is more important than grieving the past. Amir Peretz
I am not an absolute pacifist, because I can't rule out the possibility that under some, carefully defined circumstances, some degree of violence may be justified, if it is focused directly at a great evil. Howard Zinn
There's no way that scientists can ever rule out religion, or even have anything significant to say about the abstract idea of a divine creator. Brian Greene