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See all More GRE words starting with V
vacillate
to waver indecisively between options or opinions
vacillation
the inability to decide between different courses of action; wavering
vacuity
total absence of thought, ideas, or substance
vacuous
empty of meaning, substance, or intelligence
vagabond
a person who roams from place to place with no fixed home
vagary
an unpredictable or capricious change or notion
vagrant
a person who wanders without a settled home or work
vainglorious
excessively boastful and vain about one's achievements
Common questions
Questions about “vigilant”
Vigilant (adjective) means keenly watchful for danger or difficulty
Here is vigilant used in an example sentence: "Border guards remained vigilant throughout the long night shift."
Common synonyms for vigilant include watchful, alert, attentive, wary.
Antonyms of vigilant include careless, negligent.
Vigilant is a GRE-level vocabulary word worth knowing for the Verbal section.
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Vocabulary sticks when you meet it in real sentences. Practise these words inside text completion and sentence equivalence questions.