Ambiguity emerges when one proposition has more than one meaning. Studying of ambiguity shows there are various varieties for it. Studying of these varieties proves that ambiguity is the adventitious condition and exists unintentionally. Thus it may be prevented from existing. In addition, although ambiguity is the subject of interpretation, the basic matter in the interpretation is eliminating of ambiguity. Therefore, absolute recognition as to the ambiguity can provide the situation for removing knowingly the ambiguity. Finally, recognition of causes of ambiguity provides this possibility for legislator to, in reforming the law, try to remove the root of ambiguity instead breaking the basis of the regulations
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