literary. : to leave a place After having breakfast and packing our bags, we sallied forth on the next leg of our trip.

Where did the phrase sally forth come from?

The phrase sally forth is a somewhat old-fashioned way to say "embark" or "get going." It comes from the primarily military noun sally, which has been used since the 16th century to mean "a sudden springing forth of besieged troops to defend against attackers." These days, most people use this phrase in a joking way: " ...

What does it mean to show forth?

to manifest; to publish; to proclaim. See also: Show.