precaution

[pri-kaw-shuhn]
noun
1.
a measure taken in advance to avert possible evil or to secure good results.
2.
caution employed beforehand; prudent foresight.
verb (used with object)
3.
to forewarn; put on guard.

Origin:
1595–1605; < Late Latin praecautiōn- (stem of praecautiō). See pre-, caution

unprecautioned, adjective


2. forethought, prudence, circumspection.
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World English Dictionary
precaution (prɪˈkɔːʃən)
 
n
1.  an action taken to avoid a dangerous or undesirable event
2.  caution practised beforehand; circumspection
 
[C17: from French, from Late Latin praecautiō, from Latin praecavēre to guard against, from prae before + cavēre to beware]
 
pre'cautionary
 
adj
 
pre'cautional
 
adj
 
pre'cautious
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

precaution
1603, from Fr. précaution (16c.), from L.L. præcautionem (nom. præcautio), from L. præcautus, pp. of præcavere "to guard against beforehand," from præ + cavere "to be one's own guard" (see caution).
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
You'll appreciate his useful landscape applications and precautions as well.
After all, the politicians failed to take basic precautions to start with.
But with proper precautions, they can be visited and experienced safely.
We try to protect ourselves against volcanoes and tornadoes, but they overcome
  us despite our best precautions.
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