In a prior post title “Mormon-Masonic Clang” I discussed how people sometime make connections between words that have simular or even rhyming sounds, when they really have no etymological relation ("Mormon," “Mahan,” “Mason,” “Mayhem,” “Man,” ”Ham,” OK, even “Sam I am.”).
I specificly mentioned the old anti-Mormon chestnut “Master Mahan.” I discussed how it was clear that neither Joseph Smith or faithfull, early, Latter-Day Saint leaders thought they were entering into a pact with Satan when they joined Masonry.
Prof. Hugh Nibley gave us some direction on the etymology of the phrase “Master Mahan.” It has nothing actually to do with the English word “Master” but is an approximation of the sound of the word “Mustirra.” Which has to do with secrets. And the root of Mahan is clearly connected to the English understanding of “great.” Hence, the "great secret keeper."
“This is a very interesting etymology here. The word secret is sirra in Arabic; the eighth form of the verb, mustirra, means "to hold a secret, to keep a secret." It's the same as the Greek word sathra for secret. The Egyptian word is seshet; meseshet is "to hold a secret." Sether is the Hebrew word for keeping a secret (the master of the secret). So this word master may not be our word master at all, but master means "keeper of secret," and Mahan means "great." In any language maha means "great." In Arabic, English, Greek, Sanscrit, or anything maha means "great." Words like magnus, mighty, might, many, maharaja; anything that's big is ma. So this could mean Master Mahan, the "great secret keeper." ...This was the secret: converting life into property.” (Prof. Hugh Nibley, Ancient Documents and the Pearl of Great Price, Adam and Eve, Lecture 19)
Which fits exactly into the context in which it was used, and not into the contrived link to Masonry.