informal›If you say someone should put up or shut up, you mean that they should either take action in order to do what they have been talking about, or stop talking about it: You keep saying you're going to ask her out. Well, put up or shut up.
The climate debate is one that has predictably generated a large amount of new vocabulary, some of it originally specialized scientific terminology that has been taken up by the media and is now common currency. Some of these terms are new additions to the Cambridge English Dictionary. The two opposing sides in