on one's guard

Definition of on one's guard

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

Word by Word Definitions

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

    :  a person or a body of persons on sentinel duty

    :  troops attached to the person of the sovereign

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

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

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


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