set forth (v.)
verbal phrase, mid-13c. (intrans.), "express openly, present to view or consideration, make fully known;" c. 1400 as "leave, begin a journey" (set out in the same sense is from late 14c.); see set (v.) + forth (adv.). The notion of set involved in it is "proceed in a specified direction," hence begin to move" (attested from late Old English). From late 14c. as "prepare and send out, issue" (a commandment, etc.). Of a price from 1520s. Intransitive sense of "go, advance, begin to march" is from mid-14c.
updated on June 17, 2022