Κάθου [2 verses](verb aor imperat mid ) "Sit" is kathiemi, [not kathemai, which means to "be seated," "sit."], which means to "let fall," "drop," "send down," "pour down," "run down (of rivers)," in a general sense, "set in motion," "employ," "allow to return from exile," "swoop down (like a wind)" and, in the passive, "to be put in motion." It it a general term that has a number of specialized meanings.  - "Sit" it is from a Greek verb means "to let fall" or "to drop," but it has a lot of casual uses such putting things in motion and employing them. It, like many Greek words that have the sense of "sit" begins with the prefix that means "down."