Word Origin & History
profane (v.)
1382, from L. profanare "to desecrate," from profanus "unholy, not consecrated," from pro fano "not admitted into the temple (with the initiates)," lit. "out in front of the temple," from pro- "before" + fano, abl. of fanum "temple." The adj. is attested from 1483; originally "un-ecclesiastical, secular;" sense of "unholy, polluted" is recorded from c.1500. Profanity is 1607, from L.L. profanitas, from L. profanus. Extended sense of "foul language" is from Old Testament commandment against "profaning" the name of the Lord.