on one's guard

Idioms  

1. see under off guard.

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Example Sentences

See Examples For:

on one's guard

“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

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 Charles Greville

Only in so doing it is necessary to be on one's guard against a blow from their long sharp bills, with which they can inflict on their pursuer a by no means trifling wound.

From Narrative of the Circumnavigation of the Globe by the Austrian Frigate Novara, Volume I (Commodore B. Von Wullerstorf-Urbair,) Undertaken by Order of the Imperial Government in the Years 1857, 1858, & 1859, Under the Immediate Auspices of His I. and R. Highness the Archduke Ferdinand Maximilian, Commander-In-Chief of the Austrian Navy. by Karl Ritter von Scherzer

And one has to be on one's guard against neighbors.

From Stories and Pictures by Isaac Loeb Peretz

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