i Register
In some senses, vigilance is marked as obsolete. Watch for register when choosing this word.
ADJ
constant, continued, eternal
extra, increased, special
The security team maintained increased vigilance at the airport following the recent threat.
VERB + VIGILANCE
exercise, maintain
relax
The security guards relaxed their vigilance after midnight, which turned out to be a serious mistake.
require
PREP
~ against
The security team maintained constant vigilance against potential theft at the airport.
~ on the part of sb
Protecting our neighbourhood from crime demands constant vigilance on the part of local residents.
PHRASES
a need for vigilance