upon 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.
It is well to be upon one's guard.
From Old Kensington by Thackeray, Miss
To stand upon one’s guard against Death exasperates her malice and protracts our sufferings.
From Imaginary Conversations and Poems A Selection by Landor, Walter Savage
He had known in abundance women of courage, women of skill in dissimulation, but he remembered that when they were both beautiful and clever it was the part of wisdom to be upon one's guard.
From The Secret Witness by Gibbs, George
Is it possible, under such circumstances, always to be upon one's guard?
From The Huguenot: (Volumes I-III) A Tale of the French Protestants. by James, G. P. R. (George Payne Rainsford)
Topt, to go out sharp, to be upon one’s guard.