• (RP) IPA: /fɔːθ/
• (America) IPA: /fɔɹθ/
• (rhotic, non-horse-hoarse) IPA: /fo(ː)ɹθ/
• (non-rhotic, non-horse-hoarse) IPA: /foəθ/

From Middle English forth, from Old English forþ, from Proto-Germanic *furþą, from Proto-Indo-European , from *per-.

forth (not comparable)

1. Forward in time, place or degree.
   • c. 1603–1604 (date written), William Shakespeare, “The Tragedie of Othello, the Moore of Venice”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC ↗, [Act V, scene ii], page 159 ↗:

     From this time forth, I never will speak word.

   • 1709-1725, John Strype, Annals of the Reformation in England

     say forth

   • 1918, W[illiam] B[abington] Maxwell, chapter XIII, in The Mirror and the Lamp, Indianapolis, Ind.: The Bobbs-Merrill Company, →OCLC ↗:

     “ […] They talk of you as if you were Croesus—and I expect the beggars sponge on you unconscionably.” And Vickers launched forth into a tirade very different from his platform utterances. He spoke with extreme contempt of the dense stupidity exhibited on all occasions by the working classes.

2. Out into view; from a particular place or position.

   The plants in spring put forth leaves.

   The robbers leapt forth from their place of concealment.

3. (obsolete) Beyond a (certain) boundary; away; abroad; out.
   • c. 1596–1598 (date written), William Shakespeare, “The Merchant of Venice”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC ↗, [Act II, scene v]:

     I have no mind of feasting forth to-night.

• fromward

• Russian: вперёд

1. (obsolete) Forth from; out of.
   • a. 1631, John Donne, The Storme:

     Some forth their cabins peepe.

From fourth; compare forty.

1. Misspelling of fourth

1. Misspelling of fourth

1. A river in Scotland that flows for about 47 km (29 miles) from The Trossachs through Stirling to the Firth of Forth on the North Sea.
2. A sea area that covers the Firth of Forth

1. A village in South Lanarkshire, Scotland (OS grid ref NS9453).

From fourth, for "fourth-generation programming language"; the u was dropped because the IBM 1130 operating system limited filenames to five characters.

1. An imperative, stack-based high-level concatenative programming language, used mostly in control applications.

   PostScript is another concatenative language similar to the Forth family of languages.