Meaning of copperbottomed | Babel Free
Examples
“Why should 100 per cent, cast-iron, copperbottomed, utterly water-tight proof be demanded before we can get rid of an unnecessary toxic hazard introduced in a cavalier and irresponsible manner[…]”
“Unfortunately, there are as yet no copperbottomed etymologies[…]”
CEFR level
C2
Mastery
This word is part of the CEFR C2 vocabulary — mastery level.
This word is part of the CEFR C2 vocabulary — mastery level.