Synonyms of 'patrol'
policeDictionary, guard, keep watch (on)
Prison officers continued to patrol the grounds.
guardDictionary, watch, garrison
Gunmen opened fire after they were challenged by a patrol.
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Keep a close watch on him while I'm gone.
Thesaurus for patrol from the Collins English Thesaurus
When soldiers , police , or guards patrol an area or building, they move around it in order to make sure that there is no trouble there.