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vigilance noun

ADJ. constant, continued, eternal | extra, increased, special You should exercise extra vigilance about locking your car properly.

VERB + VIGILANCE exercise, maintain | relax The birds cannot afford to relax their vigilance against predators. | require

PREP. ~ against vigilance against shoplifters | ~ on the part of sb Guaranteeing the safety of students requires continued vigilance on the part of teachers.

PHRASES a need for vigilance