Free from doubt, burden, or obstacle; without limitation; plain or unencumbered.
The term is used to mean unambiguous or definitive and has various applications. For example, a clear intent to make a gift means that there is no doubt that the donor had the intent to relinquish all dominion and control over the property.
Clear and convincing proof is evidence that establishes a firm belief in a person's mind that a fact much more likely than not exists.