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on guard

ADJECTIVE

defensive

Synonyms

WEAK

alert averting cautious checking defending expectant guarding preservative preventive protecting safeguarding vigilant warding off watchful withstanding

ADVERB

feeling wary

Synonyms

WEAK

alert careful cautious defensive guarded heedful mindful observant on one's guard on one's toes on the lookout on the watch vigilant wary watchful

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.

Yet the Fed also has to be on guard against higher energy prices shaping how consumers and businesses view inflation in the long run.

From MarketWatch • Jun. 9, 2026

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

Tethered to the ground, on guard, with a very sick person to take care of.

From "The Hunger Games" by Suzanne Collins

on guard

Example Sentences

Related Words