Forth (adv.) Forward; onward in time, place, or order; in advance from a given point; on to end; as, from that day forth; one, two, three, and so forth.

Forth (adv.) Out, as from a state of concealment, retirement, confinement, nondevelopment, or the like; out into notice or view; as, the plants in spring put forth leaves.

Forth (adv.) Beyond a (certain) boundary; away; abroad; out.

Forth (adv.) Throughly; from beginning to end.

Forth (prep.) Forth from; out of.

Forth (n.) A way; a passage or ford.