GRE Vocab Wednesdays: Latin Roots

To anyone studying vocabulary, it should hardly be news that Latin has strongly influenced English. But there are also Latin phrases that pepper more academic writing. These phrases are sometimes italicized, and must be treated as inviolable whole, something you cannot just take apart. Meaning if you drop the ‘grata’ from ‘persona non grata’, you get the meaningless ‘persona non’. By extension, ‘grata’ is not a word.

These Latin phrases are not too common on the GRE, but it does not hurt to learn some of the more common ones.


De facto

If something is de facto, it is in name only, not necessarily by right. A good example would be a de facto ruler of a country. That person was not elected (he/she is not there by right), however due to some events, that person is the ruler of the country.

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Persona non grata

A person who is not welcome is a persona non grata. ‘Grata’ comes from the Latin for pleasing.

Archibald was a persona non grata at family reunions, showing up in garish suits under which he would not so subtly hide his flask of brandy.


De rigueur

If something is required by etiquette and popular fashion then it is de rigueur. It is de rigueur for runway models to be rail thin, hip hop artists to flash considerable bling, and big-name athletes to have an entourage.


Sine qua non

This one definitely looks intimidating, but all it means is an essential something. For instance, in prepping for the GRE, ETS materials are the sine qua non. They are truly indispensible. I like to think of Magoosh as the quasi sine qua non. (Quasi-, by the way, is a Latin root meaning almost).


Ex nihilo

This phrase actually isn’t as common as the others. It means emerging from nothing. Few works of genius have been truly ex nihilo. Even Isaac Newton himself said he stood upon the shoulders of giants.


Sui generis

This translates literally from Latin as ‘of its own kind.’ A simple way to translate sui generis is unique, or one of a kind.


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  • Chris Lele

    Chris Lele is the Principal Curriculum Manager (and vocabulary wizard) at Magoosh. Chris graduated from UCLA with a BA in Psychology and has 20 years of experience in the test prep industry. He's been quoted as a subject expert in many publications, including US News, GMAC, and Business Because. In his time at Magoosh, Chris has taught countless students how to tackle the GRE, GMAT, SAT, ACT, MCAT (CARS), and LSAT exams with confidence. Some of his students have even gone on to get near-perfect scores. You can find Chris on YouTube, LinkedIn, Twitter and Facebook!

8 Responses to GRE Vocab Wednesdays: Latin Roots

  1. Zzz October 25, 2019 at 1:43 pm #

    Hi I have a basic but important question, how to type Latin terms in GRE writing session?

    • Magoosh Test Prep Expert
      Magoosh Test Prep Expert November 1, 2019 at 4:21 pm #

      Hi there,

      I’m afraid I don’t understand what you are asking. What Latin terms do you need to type that you couldn’t type with a normal QWERTY keyboard? If you give me some more information, may be able to provide more specific advice 🙂

  2. Andrea March 8, 2017 at 7:07 pm #

    Sorry Chris, i would like you to know that “erudite” and “desultory” both come from latin and has their prefixes and roots as wel in it..

    take a look on merriam-webster dictionary, section “Did you know?” and “Origin and Etymology”..

    great work btw, here and as well for the “roots” video..


  3. praneeth August 20, 2015 at 12:20 am #

    You have written: ‘Grata’ comes from the Latin for not pleasing. Doesn’t ‘Grata’ mean pleasing and ‘non grata’ not pleasing.

  4. Christina Curell October 30, 2012 at 4:38 pm #

    This post reminds me of a thought I had recently while studying. I am from the US, but have been living in Ecuador for a couple of years. You should do a vocab category with cognates of words that are simpler in Spanish! Comport, mordant, ingenuous, nebulous… there are lots of words that I have come across while studying that I was not aware of in English, but which are very easy words if you know Spanish or Spanglish.

  5. pedro October 24, 2012 at 8:34 pm #

    Hi Chris,

    could you please help me in getting source which is useful for GRE Idioms like,



    • Chris Lele
      Chris October 29, 2012 at 11:07 am #

      Hi Pedro,

      I snooped around on-line, but was unable to find any. I know MGRE has a solid list in their TC/SE book…but that’s about it.

      How about I come up with some more for this vocabulary Wednesday? Look for the list this Wed. :).

      • pedro October 29, 2012 at 7:58 pm #

        Thats great Idea !

        You are Amazing 😀


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