semper fi

interjection

sem·​per fi ˌsem-pər-ˈfī How to pronounce semper fi (audio)
used as a shortened form of the Latin phrase semper fidelis, "always faithful," motto of the U.S. Marine Corps

Word History

First Known Use

1950, in the meaning defined above

Time Traveler
The first known use of semper fi was in 1950

Dictionary Entries Near semper fi

Cite this Entry

“Semper fi.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/semper%20fi. Accessed 14 Jul. 2024.

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