indurate

adj 0.875

hardened

adj 0.762

hard-set

adj 0.659

iron-hearted

adj 0.620

concreted

adj 0.608

ossified

adj 0.598

unhardened

adj 0.595

hardpacked

adj 0.594

immured

adj 0.590

ironclad

adj 0.589

calcified

adj 0.588

rock-ribbed

adj 0.586

hardenable

adj 0.584

callused

adj 0.579

sclerosed

adj 0.573

hard

adj 0.572

hardheaded

adj 0.572

rock hard

adj 0.569

ironbound

adj 0.566

tectonized

adj 0.566

adamantine

adj 0.565

leather-hard

adj 0.565

nitrided

adj 0.559

case hardened

adj 0.558

cornified

adj 0.557

rigid

adj 0.555

olid

adj 0.554

ingrained

adj 0.554

hardy

adj 0.553

fossilized

adj 0.550

crystallized

adj 0.550

stonelike

adj 0.549

hard-boiled

adj 0.549

conditioned

adj 0.549

ruggedized

adj 0.549

inveterate

adj 0.548

rockbound

adj 0.547

forted

adj 0.545

overconsolidated

adj 0.545

ingrain

adj 0.544

indentured

adj 0.544

made of sterner stuff

adj 0.543

hard-nosed

adj 0.542

hardhearted

adj 0.542

urned

adj 0.542

unyielding

adj 0.540

dolomitized

adj 0.535

sturdy

adj 0.534

testaceous

adj 0.533

made of stone

adj 0.532

set in stone

adj 0.531

nondeformable

adj 0.530

encrusted

adj 0.529

rugged

adj 0.529

coriaceous

adj 0.528

concretionary

adj 0.528

hidebound

adj 0.528

resistant

adj 0.526

compacted

adj 0.526

hardbound

adj 0.526

hard as nails

adj 0.524

hard-and-fast

adj 0.524

hard put

adj 0.523

solid

adj 0.523

stony

adj 0.523

honed

adj 0.523

petrified

adj 0.522

reinforced

adj 0.521

stiff

adj 0.520

calcined

adj 0.520

durable

adj 0.519

forged

adj 0.519

starched

adj 0.518

obdurate

adj 0.518

diehard

adj 0.516

flinty

adj 0.516

adamant

adj 0.515

enduring

adj 0.515

concrete

adj 0.515

perdurable

adj 0.514

unbending

adj 0.512

ossific

adj 0.512

biomineralized

adj 0.511

congealed

adj 0.511

armored

adj 0.511

staunch

adj 0.509

stoneground

adj 0.509

industrialized

adj 0.509

unweathered

adj 0.509

rammed

adj 0.508

brassbound

adj 0.508

refractory

adj 0.508

inspissated

adj 0.507

noninduced

adj 0.507

immovable

adj 0.506

uninduced

adj 0.506

bullheaded

adj 0.505

incrassate

adj 0.505

tamped

adj 0.505

weathered

adj 0.505