V2 Vocabulary Building Dictionary
Definition: watchful and attentive to real or potential danger
Synonyms: watchful, attentive, alert, on guard, cautious, wary
Antonyms: negligent, lax
Tips: Vigilant is related to the word vigil, which means "a watch, observance, or prayer that typically takes place at night." If you are vigilant, you are keeping a careful watch. We hear the word vigilant used by politicians (usually the President) to describe how they will face enemies. Most people misinterpret the word to mean steadfast and resolved, and although this is implied, vigilant refers more to watching and keeping a close eye on something bad. Think of the related word vigilante, which is used to denote a person who protects the people (rather than relying on legal authorities)--a vigilante is vigilant in looking out for bad people and protecting innocent people.
If you remain vigilant at all times, you are less likely to become a victim of crime. (alert, watchful, cautious)
The vigilant security officer faithfully protected the building for many years. (attentive, watchful)
The store manager kept a vigilant eye on her inventory in order to prevent theft. (attentive)
I'm always vigilant about eating my vegetables in order to remain in good health. (watchful)
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