For the duration Definition 1 of 3Pro Tip 1/3Time-Specific Events Use 'for the duration' when something has a clear start and end time. The exhibition is open for the duration of the summer. Pro Tip 2/3Temporary Arrangements It's often used to discuss temporary living or working situations. I'll be renting this room for the duration of my internship. Pro Tip 3/3Not Permanent Remember that 'for the duration' implies the situation won't last forever. You'll be in charge for the duration of the manager's maternity leave.