UK idiom: copper-bottom ??

Started by rcjordan, January 26, 2019, 02:26:04 PM

Previous topic - Next topic
Print
Go Down Pages1
User actions

rcjordan

January 26, 2019, 02:26:04 PM
As in: Global Fund must copper-bottom claims it has saved 27 million lives, say experts.

Prove? Confirm? Substantiate?
Print
Go Up Pages1
User actions