on one's guard
IdiomsExample Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
“Nature here is so strong that one has to be on one’s guard to not be absorbed by it,” wrote Dodge.
From Los Angeles Times ● Feb. 16, 2023
It has sniffed at such examples as "directives" for orders, "alerted" for being put on one's guard, "dis-O.K." for withdrawing approval, "deactivate" for abolishing.
From Time Magazine Archive
And in view of this fact one must be on one's guard against confusing a logical transformation of concepts with a genealogical development.
From At the Deathbed of Darwinism A Series of Papers by O'Harra, Edwin V.
It is necessary to be on one’s guard against what one hears, as I verified yesterday in a particular case.
From The Greville Memoirs A Journal of the Reigns of King George IV and King William IV, Vol. III by Greville, Charles
But one can be on one's guard, and that I assuredly would be.
From The Sand-Hills of Jutland by Bushby, Mrs. (Anna S.)
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
