procrastinate: [16] Crās was Latin for ‘tomorrow’ (its antecedents are uncertain). The adjective derived from it was crāstinus ‘of tomorrow’, which in turn formed the basis of a verb prōcrāstināre ‘put forward to tomorrow’ (prō- denotes ‘forward’). By the time it reached English it had broadened out to simply ‘delay’. [procrastinate etymology, procrastinate origin, 英语词源]