also moulder, "to crumble away, turn to mold or dust by natural decay," 1530s, probably frequentative based on mold (n.3) "loose earth." Related: Moldered; moldering.
also moulder, mid-15c. (late 13c. as a surname), "one who molds or forms into shape," agent noun from mold (v.).
updated on February 10, 2019