to help to prevent something from happening
to try to prevent something from happening
Fibre in the diet is thought to guard against heart disease.
He also has his sights on cutting global warming and guarding against human extinction by helping to colonise other planets.
His absence yesterday was officially to guard against having to field the same questions that he will face then.
The element of surprise is difficult to guard against.
We need to guard against the possibility of people losing interest.
guards against
guarding against
guarded against
There is no origin for this phrasal verb
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