nightwatch
Overnight guard duty
A nightwatch is a period of guard duty during nighttime hours, or the person or group keeping watch: The nightwatch reported nothing unusual.
Historically, nightwatches patrolled cities before modern police forces existed.
The term evokes vigilance in darkness—someone staying alert while others sleep.
Guard on duty
- sentinelGuard who monitors
- patrolRegular surveillance route
- lookoutWatcher or vista point
- keeperOne who guards
warden · custodian · protector · defender · garrison · constable · officer · scout
Total absence of light
- midnightTwelve o'clock at night
- moonlightReflected solar radiance, nocturnal
- starsLuminous celestial bodies
- twilightLight after sunset
shadows · stillness · silence · predawn · small hours · graveyard shift · sleeplessness · wakefulness
Systematic observation of subjects
- monitoringOngoing observation of something
- cameraImage capturing device
- sensorInput-detecting device
- alarmUrgent warning signal
protection · safety · intruder · trespasser · deterrent · barrier · gate · fence
State of keen awareness
- wakefulnessState of being conscious
- alertnessActive mental awareness
- observanceKeeping of customs
- remembranceAct of holding something in mind
candle · prayer · meditation · contemplation · devotion · solemnity · reverence · mourning
sentry
Guard on duty
keeper · warden · custodian · protector · defender · garrison · constable · officer · scout · overseer
darkness
Total absence of light
- midnightTwelve o'clock at night
- moonlightReflected solar radiance, nocturnal
- starsLuminous celestial bodies
twilight · shadows · stillness · silence · predawn · small hours · graveyard shift · sleeplessness · wakefulness · vigil
surveillance
Systematic observation of subjects
- monitoringOngoing observation of something
- cameraImage capturing device
- sensorInput-detecting device
alarm · protection · safety · intruder · trespasser · deterrent · barrier · gate · fence · lock
vigilance
State of keen awareness
- wakefulnessState of being conscious
- alertnessActive mental awareness
- observanceKeeping of customs
remembrance · candle · prayer · meditation · contemplation · devotion · solemnity · reverence · mourning · memorial
- nighttimemidnight, starry sky, moonlight, dusk, darkness
- night workerssecurity guards, graveyard shift, security guard, late shift, swing shift
- securitysecurity guard, security cameras, alarm system, security system, lock
- animal breedingbreeding, dog breeding, mating, gestation, crossbreeding
- vigilscandlelight vigil, prayer vigil, silent vigil, vigil candle, vigil light
- batterscake batter, pancake batter, waffle batter, brownie batter, crepe batter
nightwatchday shift
Work period during sunlight
daytime · morning watch · day · morning · daylight hours