Question 1

What does "guard against" mean?

Accepted Answer

To take preventive measures to stop something harmful from occurring.

Question 2

How do you use "guard against" in a sentence?

Accepted Answer

You should always guard against complacency — that's when most mistakes are made.

Question 3

Is "guard against" formal or informal?

Accepted Answer

"guard against" is register-neutral — appropriate in both casual and formal contexts. Used in a wide range of formal and informal contexts — from health advice ('guard against infection') to legal and political discourse ('guard against abuse of power'). Always followed by a noun or gerund. Common in instructional and advisory language.

guard against

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