A precaution is a careful action you make in advance. You might want to take the precaution of bringing lots of water and sunblock if you're going on a desert hike.

Precaution means exactly what it sounds like. The prefix pre- means before, and caution means carefulness in the face of danger. People use glasses when they're on a computer as a precaution because there are links to long hours on a computer and vision damage. A fire drill is a precaution so that you know what to do in case of a real fire. Someone who is always careful exhibits precaution.

Definitions of precaution
  1. noun
    a precautionary measure warding off impending danger or damage or injury etc.
    “he put an ice pack on the injury as a precaution
    synonyms: guard, safeguard
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    a precaution in case of an emergency
    security, security measures
    measures taken as a precaution against theft or espionage or sabotage etc.
    type of:
    measure, step
    any maneuver made as part of progress toward a goal
  2. noun
    the trait of practicing caution in advance
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    type of:
    caution, circumspection
    the trait of being circumspect and prudent
  3. noun
    judiciousness in avoiding harm or danger
    synonyms: care, caution, forethought
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    type of:
    good judgment
Word Family
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