CC-CEDICT: 再者 (zàizhě) moreover / besides
The 者 is confusing me. If we break 再者 down into its characters, we get 再 (again; then; further) and 者 (that which; he who, she who; those who). 再 makes sense. but I don't understand the role of 者? As a conjunction, 再者 is a functional morpheme, and is not limited to 者 (people).
In response to Pedroski's question "者 is not person who told you that?":
Collins Dictionary defines 者 as 人 and 物.