Holdover

[Dave Paprocki]

a hang over that kicks in later in the day. as if...you were to do drink into the wee hours of the morning, wake up still drunk, feeling fine and feel the effects around 3pm.

[Dave Paprocki]

a person or thing that continues from an earlier time, especially a person who continues in an organization after other people have been replaced:

[Jessica]

Postpone something.