on one's guard

idiom
Updated on: 15 Nov 2017

Definition of on one's guard

:watching for possible danger, threats, problems, etc.
  • inspectors on their guard for certain violations that are often overlooked

Word by Word Definitions

guard play
  1. : one assigned to protect or oversee another: such as

  2. : a person or a body of persons on sentinel duty

  3. : troops attached to the person of the sovereign

  1. : to protect an edge of with an ornamental border

  2. : to protect from danger especially by watchful attention : make secure

  3. : to stand at the entrance of as if on guard or as a barrier


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