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plural deadlines
: a date or time when something must be finished : the last day, hour, or minute that something will be accepted
[count]
She worked on her composition right up until the deadline
We had to hurry to meet/make the deadline.
We missed the deadline
The project was completed a week past its deadline.
The deadline for submitting college applications is April 19th
They're working under/with a deadline.
[noncount]
They're working under deadline.