Not conversant or acquainted (with something); unfamiliar.(adjective)
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Use "inconversant" in a sentence
"I shall only say, that those who are inconversant with these objects of faith — whose minds are not delighted in the admiration of, and acquiescence in, things incomprehensible, such as is this constitution of the person of"
"All Metford's employees, with the exception of Dave, were foreigners, more or less inconversant with the English language."