That is based on arguments. Pertaining to arguments.(adjective)
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Use "argumental" in a sentence
"Once again, is is being adopted to use victim-hood and oppression as part of their argumental basis: very humorous."
"Tyler Burge (1973) finds support for the metalinguistic view in non-argumental occurrences of names, where they often take on a metalinguistic interpretation, as in"
"Burge, who is, as remarked above, a demonstrativist, represents the semantic value of a demonstrative (and so an argumental occurrence of a name) with a variable."