copper-fasten

British

verb

(tr) to make (a bargain or agreement) binding

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The UK have attempted to copper-fasten the idea of rapid improvement in national plans by asking all countries to attend a high-level ministerial meeting on climate change every year.

From BBC

This iconoclastic, doomsday rhetoric will only serve to copper-fasten the boundaries that have been thrown up between ‘misogynerds’ and ‘social justice warriors,’ two utterly fatuous labels.

From Forbes

There has been no serious effort to reform this, but many efforts instead to copper-fasten it.

From The Guardian

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023