It is possible that this is the gentilic of the Jaredite GN MORON (see immediately above) (JAT). Nibley also pointed out the connection, giving the meaning “belonging to Moron” or “of Moron” to the name MORONI (LID, 244). Also possible is EGYPTIAN mrny, “my beloved” or mr.n.i, “I was beloved” (RFS).
Alma 50:32 has an interesting turn of phrase, “the people who were in the land BOUNTIFUL, or rather MORONI, feared that they would hearken to the words of MORIANTON and unite with his people.” The phrase seems to be saying, “MORONI feared that the people who were in the land BOUNTIFUL would hearken to the words of MORIANTON and unite with his people.” If this is the correct interpretation, then there must be something similar on the plates between “MORONI” and “BOUNTIFUL” for Joseph to have made the correction. One HEBREW word for “BOUNTIFUL” is mlʾ, which when transposed into EGYPTIAN script (which does not distinguish between r and l), might yield mār’āni.
Less likely is a hypocoristicon “(my) lord,” from Aramaic marōn, “lord,” plus the 1c.s. possessive suffix or hypocoristic ending (JH). Even less likely is a derivation from Mishnaic HEBREW marōn, “rebellion” (JH). There is a place-name bêtamrôn from the root mrh (the i ending would be an adjectival, gentilic form, “the one of”); however, in view of the name MORONIHAH, however, this translation is less likely (JH). See also the suggestions for MORON.
Deseret Alphabet: 𐐣𐐄𐐡𐐄𐐤𐐌 (moʊroʊnaɪ), 𐐣𐐃𐐡𐐃𐐤𐐌 (mɔːrɔːnaɪ), 𐐣𐐄𐐡𐐃𐐤𐐌 (moʊrɔːnaɪ), 𐐣𐐃𐐡𐐄𐐤𐐌 (mɔːroʊnaɪ), 𐐤𐐄𐐡𐐄𐐤𐐌 (noʊroʊnaɪ)