procrastinate

Concise Oxford English Dictionary © 2008 Oxford University Press:
procrastinate /prə(ʊ)ˈkrastɪneɪt/

▶verb delay or postpone action.

– derivatives
procrastination noun,
procrastinator noun,
procrastinatory adjective.

– origin C16: from L. procrastinat-, procrastinare ‘defer till the morning’, from pro- ‘forward’ + crastinus ‘belonging to tomorrow’ (from cras ‘tomorrow’).

usage: On the difference between procrastinate and prevaricate, see usage at prevaricate.