From Middle English mo, from Old English mā, from Proto-Germanic *maiz, from a comparative form of Proto-Indo-European *meh₂-. Cognate with Swedish mer, Danish mer; and with Irish mó, Albanian më. See also more, most.
Pronunciation spelling of more as pronounced in non-rhotic dialects, notably African American Vernacular English. Only coincidentally similar to sense 1 above. Compare fo', ho#Etymology 2.