English language
English was a Human language. It was a major operating language for Starfleet, and was spoken widely throughout the Federation.

The modern language had developed in England by around the 16th century, and began spreading across Earth in earnest in the 17th century as Old Britain expanded its naval power over the planet's oceans and claimed many colonial territories. As a result, the language became commonly spoken in such nation-states as Australia, Bermuda, Canada, Fiji, India, Ireland, Malaysia, New Zealand, Singapore, South Africa, and the United States of America, among others.

Poetry and literature, including the Bible, made use of old English forms of words such as "thou", "thee", and "shalt". (, ,  et. al.)

"Volatile" was an English adjective. ()

English alphabet
The alphabet of the English language consisted of 52 symbols representing 26 letters.

The English alphabet was also present in nurseries to help children learn them along side other alien alphabets. A nursery aboard the Enterprise-D had the English alphabet on the wall in 2365. ()

Starfleet vessels of note, such as the   and the predecessors of the  were commemorated by having new ships later named after them and keeping the same registry number, but adding a letter based on the number of ships that have been renamed. The  , which has the registry number NCC-1701-D, would then be the fifth vessel to bear the name, and referred to as the Enterprise-D.

When the 's autodestruct sequence was activated, Captain Jean-Luc Picard joked wryly that they would probably build yet another Enterprise, "…plenty of letters left in the alphabet." ()

Chronology 
From 1992 to 1996, Khan Noonien Singh was the absolute ruler of a quarter of Earth's Human population, from the Subcontinent to the Middle East. English was spoken in several of his subject countries, and in others seized by his fellow supermen in 1993. ()

In 2024, individuals that were submitted to the Sanctuary Districts were given questionnaires and told to answer all of the questions to the best of their ability. They were told that if they could not speak English an interpreter would be provided, and if they could not read, the questions would be given to them verbally. ()

On the maiden mission of the UESPA/Starfleet , when linguist Hoshi Sato was discomforted by the sequencing of the deflector at warp 4.4, she snapped at T'Pol "ponfo mirann!" (Vulcan for "go to hell!"); T'Pol replied coldly, "I was instructed to speak English on this voyage and I'd appreciate it if you'd respect that." ()

In early 2152, welcoming Vulcan ambassador V'Lar aboard Enterprise, T'Pol addressed her in Vulcan; V'Lar insisted that they not speak this language, as she wanted the opportunity to practice her English. ()

Later yet that year, Jonathan Archer encountered a wraith that appeared to him in the form of a Human female. This female spoke to Archer, much to his surprise, as his initial reply to her was a statement of the obvious: "You're speaking English." ()

When Enterprise encountered an automated repair station, Captain Archer noted that all of the panels were in English. T'Pol stated the computer must have scanned their database. ()

In the alternate reality, Jaylah learned the English language from the records of the . When she spoke to  upon their first meeting in 2263, he was surprised to be addressed in English. ()

In 2267, Khan was revived from suspended animation and his first question was in English: "How long?"  Waking later in the 's sickbay, he thought he had dreamed of hearing the language. () 

Later that year, the long-lost Zefram Cochrane was surprised to find that James T. Kirk, Spock, Leonard McCoy, and Nancy Hedford spoke English. ()

The inhabitants of the planet 892-IV spoke a parallel-development form of English, which Spock said had been spoken on Earth three hundred years before. ()

In 2268, the Enterprise encountered a Melkotian buoy which communicated telepathically, everyone on the bridge comprehending the message in her/his native language: Russian for Chekov, Ki-Swahili for Uhura, his own planetary language for Spock, English for Kirk, and certain others. ()

In 2270, Nyota Uhura described the English language as "universal". ()

When the crew of the  pulled up the Treaty of Armens, it included both the English language version alongside the Sheliak language version. ()

English was still in use in the 33rd century in some capacity by the V'draysh. The word "Warning" would be displayed on V'draysh escape pods in a state of danger. ()

External links 
 
 

de:Englisch
fr:Anglais (langue)
Earth languages