guard
The word carries a heavy sense of vigilance and boundary maintenance. It suggests a protective barrier, whether physical or psychological, intended to keep threats out and valuables safe. There is an inherent tension in the word, evoking a state of readiness or alertness.
In an emotional context, the term shifts toward defensiveness. When someone puts up a guard, they are creating a mental wall to prevent vulnerability or emotional harm, mirroring the physical act of a sentry protecting a gate.
Countable when referring to a specific employee or sentinel (two guards). Uncountable when referring to the general state of protection or a defensive posture (the guard was tight).
Meanings
A person whose job is to protect a building, person, or place from attack or unauthorized entry.
The museum guard asked us to stop taking photos.
A protective device or cover designed to prevent contact with a dangerous part of a machine.
The circular saw has a plastic guard to protect the operator's fingers.
A person who supervises prisoners in a jail or prison.
The prison guards conducted a cell search at midnight.
A player in basketball whose primary role is to handle the ball and direct the offense.
The team signed a new point guard to improve their ball-handling.
To protect someone or something from danger, attack, or theft.
Soldiers were deployed to guard the embassy during the protests.
Examples
The security guard checked everyone's identification at the entrance.
Always ensure the safety guard is in place before starting the machine.
The prison guard locked the cell doors at ten o'clock.
The team's starting guard is known for his exceptional three-point shooting.
Armed soldiers were ordered to guard the royal palace.
The dog will guard the livestock from predators during the night.
Investors must guard against sudden fluctuations in the stock market.
Phrasal Verbs
guard against
to take precautions to prevent something bad from happening
Investors are advised to guard against sudden market volatility by diversifying their portfolios.