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FST

noun

FST is a noun meaning “Initialism of field sobriety test” (English Wiktionary, September 2026). It is spelled F-S-T, and it appears about once in every 9 million words in written English (wordfreq, 2021 data). The plural of FST is FSTs.

What does FST mean?

noun

  1. 1

    Initialism of field sobriety test.

  2. 2

    Initialism of French subtitles.

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

Forms of FST

  • FSTs plural

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

How common is FST?

FST appears about once in every 9 million words in written English, the 87,317th 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).

FST in Spanish, French, German and Portuguese

In the sense French subtitles:

LanguageWords
FrenchSTF

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.