"Origins of words" by Susie Dent, Countdown 20/11/17 (discipline, procrastination, peredination, deadline)

I thought a little bit about the vocabulary of discipline and its enemy, which is usually procrastination in my case. But to start with, discipline, you need to be a disciple, really, to acquire a discipline, so to acquire learning in some way, because that word discipline comes from yhe Latin disciplinus, a disciple, so a learner, which, of course, in ancient times was all-important. So important, in fact, that the word school comes from a Greek word meaning leisure because it was thought to be so enjoyable to acquire a new knowledge. I'm not sure schoolchildren today would agree with that. But in other words, a period od apprenticeship is often necessary to produce good quality work, hence the learning idea of discipline. But as I say there are many enemies to that all around us. And I mentioned procrastination, and that it has at its heart cras, meaning tomorrow. So the idea was in Latin, that you were putting something off until next day. If you want to put something off until the day after tomorrow, that is known as perendination, which is also to perendinate - it's quite a useful word in my vocabulary. What's needed, then, is the opposite of all of these, is to knuckle down and ironically that comes from play, not from work, it's a geme of marbles, ehen to knuckle down is literally to put your knuckles down to the ground in order to shoot better. And finally, if you were like Douglas Adams, who famously said, "I love a good deadline. I love the wooshing sound they mke as they go by", it's worth remembering that the first deadlines were lines drown around military prisons beyond which you could be shotif you tried to escape.