leather

adj 0.725

leathery

adj 0.714

leathern

adj 0.698

hardened

adj 0.645

coriaceous

adj 0.628

leatherbound

adj 0.627

semihard

adj 0.609

unhardened

adj 0.606

hard

adj 0.580

hard-set

adj 0.578

hardenable

adj 0.577

rock hard

adj 0.576

hardwood

adj 0.569

stonelike

adj 0.567

indurated

adj 0.565

hardback

adj 0.552

fire brick

adj 0.548

hardcover

adj 0.547

hardpacked

adj 0.546

hard-boiled

adj 0.546

hardy

adj 0.545

dried

adj 0.544

stiff

adj 0.538

shoe-leather

adj 0.537

hard as nails

adj 0.537

hard put

adj 0.535

testaceous

adj 0.530

indurate

adj 0.526

undried

adj 0.518

clay-cold

adj 0.518

hardheaded

adj 0.518

case hardened

adj 0.517

iron-hearted

adj 0.516

rubberlike

adj 0.514

hard-and-fast

adj 0.514

dried out

adj 0.513

shagreened

adj 0.511

dry

adj 0.510

callused

adj 0.510

stony

adj 0.510

hard-nosed

adj 0.509

dry as a bone

adj 0.508

rock-like

adj 0.507

concrete

adj 0.506

bone

adj 0.506

hard-featured

adj 0.505

suede

adj 0.504

hardbound

adj 0.504

concreted

adj 0.501

rubbery

adj 0.501