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.
Still, one must be always upon one's guard!
From Up the Hill and Over by Mackay, Isabel Ecclestone
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)
It is well to be upon one's guard.
From Old Kensington by Thackeray, Miss
But when one is specially invited to be candid, one is naturally set upon one's guard.
From Doctor Thorne by Trollope, Anthony
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
