Pronunciation: /ɒn ɡɑrd/
adjective Alert and prepared for danger or difficulty.
A1 The cat was on guard, ready to pounce on any intruders.
A2 The security guard stood on guard outside the building, watching for any suspicious activity.
B1 The soldiers were on guard duty all night, protecting the base from any potential threats.
B2 The goalkeeper was always on guard, ready to block any shots that came his way.
C1 The CEO was constantly on guard, monitoring the company's financial performance and making strategic decisions.
C2 The cybersecurity team was on guard against potential cyber attacks, constantly monitoring the network for any unusual activity.
preposition In a state of readiness to defend against attack or danger.
A1 The cat was on guard by the door, ready to pounce on any intruders.
A2 The security guard stood on guard all night, protecting the building.
B1 The soldier was on guard duty at the entrance, watching for any suspicious activity.
B2 The goalkeeper was on guard for the penalty kick, ready to defend the goal.
C1 The secret service agent was constantly on guard, prepared for any potential threats to the president.
C2 The knight remained on guard at the castle gates, keeping watch for any enemy advances.
formal The soldiers stood on guard at the entrance to the palace.
informal Make sure you're on guard when walking alone at night.
slang I always have my guard up when dealing with strangers.
figurative She was on guard against any potential criticism during the presentation.
was on guard
on guards
more on guard
most on guard
on guard
will be on guard
have been on guard
is on guard
on guard
on guard
to be on guard
being on guard
on guard