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Synonyms

prep

1 American  
[prep] / prɛp /

noun

  1. preparatory school.

  2. a preliminary or warm-up activity or event; trial run.

    The race is a good prep for the Kentucky Derby.

  3. preparation.

    dealer prep on the car included.

  4. the act of preparing a patient for a medical or surgical procedure.


adjective

  1. preparatory.

    a prep school.

  2. involving or used for preparation.

    the mortuary's prep room.

verb (used with object)

prepped, prepping
  1. to prepare (a person) for a test, debate, etc.

  2. to prepare (a patient) for a medical or surgical procedure, as by shaving and washing the skin with an antibacterial soap.

  3. to prepare (a vehicle or craft) for sale, use, a test drive, or a race.

  4. to prepare (something); make ready.

    You can prep the onions and peppers in advance.

verb (used without object)

prepped, prepping
  1. to prepare; get ready.

    to prep for the game.

  2. to attend a preparatory school.

PrEP 2 American  
[prep] / prɛp /

noun

Medicine/Medical.
  1. pre-exposure prophylaxis: the prevention of a disease such as HIV or hepatitis A through the use of pills or vaccine, administered typically to those whose risk of contracting the disease is substantial.


prep. 3 American  

abbreviation

  1. preparation.

  2. preparatory.

  3. prepare.

  4. preposition.


prep. 1 British  

abbreviation

  1. preparation

  2. preparatory

  3. preposition

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

prep 2 British  
/ prɛp /

noun

  1. informal short for preparation preparatory school

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

verb

  1. (tr) to prepare (a patient) for a medical operation or procedure

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Usage

What else does prep mean? Preps are people who live a preppy lifestyle, associated with young, rich, usually white men and their stereotypical fashion.

Etymology

Origin of prep

First recorded in 1860–65; by shortening

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

"Whether you're living with a partner, housemate, or family, your daily interactions -- from hugging, kissing and sharing food prep spaces -- may encourage the exchange of gut microbes," said Dr. Lee.

From Science Daily • Apr. 13, 2026

While worries about the tax prep business’s long-term viability are real, there’s reason to believe investors may be overreacting.

From Barron's • Apr. 6, 2026

Gray, who’s been watching since he was 12, doesn’t do any prep work.

From The Wall Street Journal • Apr. 1, 2026

That especially goes for married couples filing jointly, even if one partner typically takes care of all the prep work.

From MarketWatch • Apr. 1, 2026

The two other boys, classmates in a Manhattan prep school, exit the lobby together.

From "You Bring the Distant Near" by Mitali Perkins