• synonyms


See more synonyms for precaution on Thesaurus.com
  1. a measure taken in advance to avert possible evil or to secure good results.
  2. caution employed beforehand; prudent foresight.
Show More
verb (used with object)
  1. to forewarn; put on guard.
Show More

Origin of precaution

First recorded in 1595–1605, precaution is from the Late Latin word praecautiōn- (stem of praecautiō). See pre-, caution
Related formsun·pre·cau·tioned, adjective


See more synonyms for on Thesaurus.com
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words


Examples from the Web for precaution

Contemporary Examples

Historical Examples

  • (b) What precaution should be taken in the use of flavorings?

    Woman's Institute Library of Cookery, Vol. 3

    Woman's Institute of Domestic Arts and Sciences

  • Only she ought to have told him of the precaution she had taken.

    The Secret Agent

    Joseph Conrad

  • This was a precaution we always took, on account of the craft's being so tender.

    Ned Myers

    James Fenimore Cooper

  • Where the forbidden thing is, no precaution can be too great.

    It Happened in Egypt

    C. N. Williamson

  • Just by way of precaution, however, I'll ask you to wait in here till I'm off.

    The Black Bag

    Louis Joseph Vance

British Dictionary definitions for precaution


  1. an action taken to avoid a dangerous or undesirable event
  2. caution practised beforehand; circumspection
Show More
Derived Formsprecautionary or precautional, adjectiveprecautious, adjective

Word Origin

C17: from French, from Late Latin praecautiō, from Latin praecavēre to guard against, from prae before + cavēre to beware
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 precaution


c.1600, from French précaution (16c.) and directly from Late Latin praecautionem (nominative praecautio) "a safeguarding," from past participle stem of Latin praecavere "to guard against beforehand," from prae "before" (see pre-) + cavere "to be one's own guard" (see caution (n.)). The verb meaning "to warn (someone) in advance" is from c.1700.

Show More
Online Etymology Dictionary, © 2010 Douglas Harper