on one's guard

Example 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

Watchful; vigilant or on one's guard against danger or difficulty.

From Webster's Unabridged Dictionary (2nd 100 Pages) by Webster, Noah

But I am well aware that arguments which draw their demonstrations from probabilities are idle; and, unless one is on one's guard against them, they are very deceptive, both in geometry and all other subjects.

From Apology, Crito, and Phaedo of Socrates by Cary, Henry

But I tell you one must always be on one's guard.

From The Possessed (The Devils) by Dostoyevsky, Fyodor