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copper-bottomed

copper-bottomed

1 7.2
A plan or investment that is certain and reliable
  • adjective
  • /ˈkɑːpərˌbɑːtəm/
  • UK
: seguro
  • Investors are always looking for copper-bottomed opportunities that guarantee good returns.

Examples

  • The company only invests in copper-bottomed projects to minimize risk.

  • His promise was as copper-bottomed as any she had ever heard.

  • This investment is a copper-bottomed opportunity.

  • I need a copper-bottomed plan for my business.

  • Investors are always looking for copper-bottomed opportunities that promise guaranteed returns.

  • The company only approves copper-bottomed investments to ensure steady profits.

  • You can trust this strategy; it's a copper-bottomed plan that will work.

Synonyms

reliable
vscopper-bottomed
342 2.7

Able to be trusted to do what is expected

focuses on absolute certainty rather than repeated consistency
dependable
vscopper-bottomed
43 2.3

A person or thing you can trust to do what they promise

stresses guarantee rather than habitual performance
safe
vscopper-bottomed
  • US
38 2.0

Not likely to cause a loss of money

is broader, covering certainty of claims and plans not only money
rock solid
vscopper-bottomed
  • Informal
31 3.6

Very strong and not likely to fail or be wrong

expresses certainty as a guarantee rather than sheer strength
airtight
vscopper-bottomed
29 5.9

A very strong argument or plan that has no weak points

applies to certainty of plans and investments not to arguments
secure
vscopper-bottomed
  • Specialized
16 4.7

A safe place for money that is unlikely to lose value

applies broadly to plans and claims not only finances
copper-bottom
vscopper-bottomed
  • UK
1 7.2

Certain to succeed and be reliable

is the formal adjective form for the same guaranteed idea

Antonyms

41 3.9

Not feeling sure or confident

2 4.3

Not safe because it might fail or break

How Reliable

copper-bottomed
  • UK
1 7.2
foolproof
34 3.9
reliable
342 2.7
dependable
43 2.3
solid
719 3.0

Surface Forms

copper-bottomed positive

Morphology

copper-bottomed = copper + bottom (semi-transparent) = copper + bottom + ed

The adjective is formed the same way as the literal sense, but the meaning ('certain, guaranteed') is a metaphorical extension and not directly deducible by all learners.

Etymology

Copper-bottomed comes from those real copper-covered ship bottoms that made ships safe and reliable at sea, and people began to use the image for promises or plans. That's why calling something copper-bottomed means it is 'certain' or 'guaranteed'.