What is another word for copper-bottom?
Pronunciation: [kˈɒpəbˈɒtəm] (IPA) 
Copper-bottom is a term that refers to something that is secure, reliable, or trustworthy. The phrase has roots in nautical language, where copper was used to coat the bottoms of ships to protect against various elements. Synonyms for copper-bottom include dependable, foolproof, safe, secure, solid, stable, steadfast, strong, sure, and trustworthy. These words are often used to describe people, things, or situations that can be relied upon, whether it's a business venture, a personal relationship, or a mechanical object. By using these synonyms, we can convey a message of strength, stability, and assurance, which can be particularly important in situations that require trust and confidence.
