[rep-til, -tahyl]
  1. any cold-blooded vertebrate of the class Reptilia, comprising the turtles, snakes, lizards, crocodilians, amphisbaenians, tuatara, and various extinct members including the dinosaurs.
  2. (loosely) any of various animals that crawl or creep.
  3. a groveling, mean, or despicable person.
  1. of or resembling a reptile; creeping or crawling.
  2. groveling, mean, or despicable.

Origin of reptile

1350–1400; Middle English reptil < Late Latin rēptile, noun use of neuter of rēptilis creeping, equivalent to Latin rēpt(us) (past participle of rēpere to creep) + -ilis -ile
Related formsrep·tile·like, adjectiverep·ti·loid [rep-tl-oid] /ˈrɛp tlˌɔɪd/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for reptiles

Contemporary Examples of reptiles

  • And some reptiles add a fourth function to the overworked cloacal repository–that of respiration as well.

  • And second, the allegers proved themselves over time to be as unappealing a litter of reptiles and crones as could be imagined.

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    Hillary Derangement Syndrome

    Michael Tomasky

    April 4, 2013

  • Fobb says he loves the Everglades—loves snakes, too—and that man is doing far more damage to the area than the reptiles.

    The Daily Beast logo
    The Great Python Hunt

    Catharine Skipp

    February 26, 2010

  • When the hiss of reptiles turns to words, you hear something that you have never heard and will never forget.

    The Daily Beast logo
    They Saw It Coming

    Stanley Crouch

    December 30, 2008

Historical Examples of reptiles

British Dictionary definitions for reptiles


  1. any of the cold-blooded vertebrates constituting the class Reptilia, characterized by lungs, an outer covering of horny scales or plates, and young produced in amniotic eggs. The class today includes the tortoises, turtles, snakes, lizards, and crocodiles; in Mesozoic times it was the dominant group, containing the dinosaurs and related forms
  2. a grovelling insignificant personyou miserable little reptile!
  1. creeping, crawling, or squirming
  2. grovelling or insignificant; mean; contemptible

Word Origin for reptile

C14: from Late Latin reptilis creeping, from Latin rēpere to crawl
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

Word Origin and History for reptiles



late 14c., "creeping or crawling animal," from Old French reptile (early 14c.) and directly from Late Latin reptile, noun use of neuter of reptilis (adj.) "creping, crawling," from rept-, past participle stem of repere "to crawl, creep," from PIE root *rep- "to creep, crawl" (cf. Lithuanian replioju "to creep"). Used of persons of low character from 1749.

Precise scientific use began to develop mid-18c., but the word was used as well at first of animals now known as amphibians, including toads, frogs, salamanders; separation of Reptilia (1835 as a distinct class) and Amphibia took place early 19c.; popular use lagged, and reptile still was used late 18c. with sense "An animal that creeps upon many feet" [Johnson, who calls the scorpion a reptile], sometimes excluding serpents.

And the terrestrial animals may be divided into quadrupeds or beasts, reptiles, which have many feet, and serpents, which have no feet at all. [Locke, "Elements of Natural Philosophy," 1689]

An inadvertent step may crush the snail
That crawls at ev'ning in the public path ;
But he that has humanity, forewarn'd,
Will tread aside, and let the reptile live.
[Cowper, "The Task," 1785]

The Old English word for "reptile" was slincend, related to slink.

Online Etymology Dictionary, © 2010 Douglas Harper

reptiles in Science


  1. Any of various cold-blooded vertebrates of the class Reptilia, having skin covered with scales or horny plates, breathing air with lungs, and usually having a three-chambered heart. Unlike amphibians, whose eggs are fertilized outside the female body, reptiles reproduce by eggs that are fertilized inside the female. Though once varied, widespread, and numerous, reptilian lineages, including the pterosaurs, ichthyosaurs, plesiosaurs, and dinosaurs, have mostly become extinct (though birds are living descendants of dinosaurs). The earliest reptiles were the cotylosaurs (or stem reptiles) of the late Mississippian or early Pennsylvanian Period, from which mammals evolved. Modern reptiles include crocodiles, snakes, turtles, and lizards.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

reptiles in Culture


A class of scaly vertebrates that usually reproduce by laying eggs. Lizards, snakes, turtles, and alligators are reptiles. Reptiles are cold-blooded animals.


The dinosaurs were reptiles.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.