on 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.

Jonathan Romain, the former rabbi of Maidenhead synagogue in Berkshire, now regularly spends his Shabbat mornings standing outside it on guard duty.

From BBC • May 2, 2026

Instead, you should be on guard against the silent, ruthless assassin of wealth: inflation.

From The Wall Street Journal • Apr. 10, 2026

These days, on guard feels like the default mode.

From Barron's • Apr. 6, 2026

An extreme heat warning remains in place for most inland areas, and a heat advisory for coastal regions, through Friday, with officials urging people to be on guard for signs of heat-related illness.

From Los Angeles Times • Mar. 18, 2026

Round the fire they sat, and those that were not on guard dozed uneasily.

From "The Fellowship of the Ring" by J.R.R. Tolkien