forth

forth or fourth? Do not confuse the spelling of forth and fourth, which sound similar. Forth is an adverb meaning "forward," "onward," or "out," as in go forth, from that day forth, bring forth. Fourth is a noun, adjective, and adverb referring to one of four parts or a position corresponding to the number four, as in cut the pie into fourths, the fourth month of the year, come fourth in the race.