24-hour
Around the clock
24-hour describes something that operates continuously or lasts a full day and night.
A 24-hour diner never closes.
A 24-hour news cycle runs around the clock. 24-hour notice means you have one full day. 24-hour time uses 0000 to 2359 rather than AM and PM: The flight departs at 1430.
Without pause or break
- round-the-clockHappening all day, every day
- uninterruptedContinuing without a stop
- constantFixed, unvarying quantity
- perpetualLasting without interruption
all-day · overnight · marathon · continuous · relentless · tireless · ongoing · sustained
Small quick-access retail shop
- dinerCasual American eatery
- pharmacyMedicinal dispensary
- gymExercise facility
- hotlineDirect emergency phone connection
ATM · gas station · emergency room · laundromat · drive-through · news channel · security · concierge
Long-distance footrace
- vigilPurposeful nighttime wakefulness
- stakeoutProlonged covert observation
- shiftMovement or work period
- fastSpeedy, or skip eating
challenge · race · stream · telethon · hackathon · dance-a-thon · surveillance · watch
Time limit for completion
- countdownBackward enumeration to zero
- turnaroundShift in opposite direction
- windowGlass-fitted wall opening
- noticeBecome aware of
cycle · period · shift · rotation · clock · interval · span · limit
nonstop
Without pause or break
- round-the-clockHappening all day, every day
- uninterruptedContinuing without a stop
- constantFixed, unvarying quantity
perpetual · all-day · overnight · marathon · continuous · relentless · tireless · ongoing · sustained · endless
convenience store
Small quick-access retail shop
hotline · ATM · gas station · emergency room · laundromat · drive-through · news channel · security · concierge · roadside assistance
marathon
Long-distance footrace
- vigilPurposeful nighttime wakefulness
- stakeoutProlonged covert observation
- shiftMovement or work period
fast · challenge · race · stream · telethon · hackathon · dance-a-thon · surveillance · watch · guard duty
deadline
Time limit for completion
- countdownBackward enumeration to zero
- turnaroundShift in opposite direction
- windowGlass-fitted wall opening
notice · cycle · period · shift · rotation · clock · interval · span · limit · warning
military time
Hours counted to twenty-four
schedule · timetable · notation · conversion · midnight · noon · minutes · timestamp · international · aviation
24-hournine-to-five
Regular office schedule
limited hours · part-time · business hours · banker's hours · seasonal
24-hourmomentary
Lasting very briefly
brief · hourly · fleeting · short-term · instantaneous