Okla. Stat. tit. 84, § 168

A testamentary disposition to "heirs," "relations," "nearest relations," "representatives," "legal representatives," or "personal representatives," or "family," "issue," "descendants," "nearest," or "next of kin," of any person, without other words of qualification, and when the terms are used as words of donation, and not of limitation, vests the property in those who would be entitled to succeed to the property of such person according to the provisions of this article on succession in this chapter.