That can be confuted, i.e. shown to be false; disprovable.(adjective)
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Use "confutable" in a sentence
"The greatest part of his writings is not confutable: it is historical and critical. '"
"A conceit not only injurious unto truth and confutable by daily experience, but somewhat derogatory unto the providence of God; that is, not only to impose so destructive a quality on any plant, but to conceive a vegetable whose parts are so useful unto many, should, in the only taking up, prove mortal unto any."
"The greatest part of his writings is not confutable: it is historical and critical.’"