Skip to main content

subforum

noun

subforum is a noun meaning “A single message board that is part of an online discussion forum” (English Wiktionary, September 2026). It is spelled S-U-B-F-O-R-U-M, and it appears about once in every 22 million words in written English (wordfreq, 2021 data). The plural of subforum is subforums or subfora.

What does subforum mean?

noun

  1. 1

    A single message board that is part of an online discussion forum.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

Forms of subforum

  • subforums plural
  • subfora plural

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

How common is subforum?

Subforum appears about once in every 22 million words in written English, the 143,405th most frequent word form in the list.

Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).

Where does subforum come from?

From sub- + forum.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).