the act or habit of procrastinating, or putting off or delaying, especially something requiring immediate attention: She was smart, but her constant procrastination led her to be late with almost every assignment.
1540s, from L. procrastinationem "a putting off," noun of action from procrastinare "put off till tomorrow," from pro- "forward" + crastinus "belonging to tomorrow," from cras "tomorrow," of unknown origin.