copper

adj 0.710

coppered

adj 0.689

coppery

adj 0.647

brassbound

adj 0.615

cupric

adj 0.608

good as gold

adj 0.589

ironclad

adj 0.589

cuprous

adj 0.566

brass

adj 0.553

cupreous

adj 0.551

silver-lined

adj 0.548

bombproof

adj 0.547

gold-plated

adj 0.546

sure-fire

adj 0.545

watertight

adj 0.545

bulletproof

adj 0.540

iron-hearted

adj 0.534

true blue

adj 0.524

bold as brass

adj 0.518

gold

adj 0.518

flat-bottomed

adj 0.517

bronze

adj 0.517

sterling

adj 0.515

sure-handed

adj 0.515

well-tried

adj 0.515

bottomed

adj 0.513

topflight

adj 0.511

stainless steel

adj 0.511

bluechip

adj 0.510

top notch

adj 0.506

surefooted

adj 0.505

tried and true

adj 0.504

heatproof

adj 0.504

stainless

adj 0.504

platinum

adj 0.502