copper-bottomedadjective
uk/ˌkɒp.əˈbɒt.əmd/us/ˌkɑː.pɚˈbɑːt̬.əmd/UK A copper-bottomed plan, deal, or investment can be trusted completely because it is safe and certain to succeed.
having a base made of copper:
a copper-bottomed saucepan
Thesaurus: synonyms and related words
Safe and secure
- airworthy
- as safe as houses idiom
- bite
- coast
- fail-safe
- firmly
- friendly
- immune
- in safe hands idiom
- innocent
- innocuous
- inoffensive
- inviolate
- ozone-friendly
- safety
- safety net
- sb/sth won't bite idiom
- seaworthy
- securely
- sheltered
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You can also find related words, phrases, and synonyms in the topics:
Stock markets
Chemistry: metals & metalworking