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
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One must, he felt, be hard on oneself, and on one's guard against the vanity of newfangled ideas and against the enervating effect of civilization.
From Seven Icelandic Short Stories by Steingrímur J. Þorsteinsson
I should have thought for my part, but that's of no consequence, it was as well to be on one's guard in a nest of vipers, for Edmund's sake, if not for your own.'
From The Young Step-Mother by Yonge, Charlotte Mary
One must be on one's guard with these great fortunes that come from such a distance.
From The Nabob, Volume 1 by Ives, George Burnham
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.