hard

adj 0.782

hard as nails

adj 0.755

rock-ribbed

adj 0.709

hard-set

adj 0.697

rock-like

adj 0.697

hard put

adj 0.686

steady as a rock

adj 0.677

rocky

adj 0.670

stone cold

adj 0.664

hardened

adj 0.663

solid

adj 0.663

stonelike

adj 0.661

hard-nosed

adj 0.653

stiff as a poker

adj 0.644

adamantine

adj 0.643

hard-and-fast

adj 0.642

diehard

adj 0.641

tough

adj 0.640

stiff

adj 0.640

hardball

adj 0.636

iron-hearted

adj 0.635

stiff as a board

adj 0.634

hardline

adj 0.629

dead set

adj 0.629

rockbound

adj 0.628

rigid

adj 0.627

hard-boiled

adj 0.620

hardpacked

adj 0.620

hard hit

adj 0.618

stony

adj 0.618

stone deaf

adj 0.615

hardy

adj 0.613

cold as ice

adj 0.613

rocking

adj 0.608

strong

adj 0.605

ironclad

adj 0.604

strong as a horse

adj 0.604

bone

adj 0.602

bulletproof

adj 0.595

hard-charging

adj 0.594

rugged

adj 0.593

hardheaded

adj 0.591

hot as hell

adj 0.589

hardwood

adj 0.588

right on

adj 0.587

superhot

adj 0.587

concrete

adj 0.583

adamant

adj 0.583

white-hot

adj 0.582

firm

adj 0.579

sturdy

adj 0.578

hard-featured

adj 0.576

leather-hard

adj 0.576

harsh

adj 0.575

bombproof

adj 0.573

hardhearted

adj 0.572

heavy

adj 0.571

stark

adj 0.569

indurated

adj 0.569

robust

adj 0.568

steely

adj 0.566

olid

adj 0.566

hardpressed

adj 0.565

boned

adj 0.564

bony

adj 0.563

dry as a bone

adj 0.563

scared stiff

adj 0.561

metal

adj 0.561

hardenable

adj 0.561

set in stone

adj 0.560

banging

adj 0.560

stoned

adj 0.559

smoking hot

adj 0.559

flat out

adj 0.559

crushing

adj 0.559

stony-faced

adj 0.558

unyielding

adj 0.558

unhardened

adj 0.557

tight

adj 0.557

superheavy

adj 0.557

staunch

adj 0.556

solid state

adj 0.556

crunchy

adj 0.555

hot

adj 0.555

brick

adj 0.555

iron

adj 0.554

rigorous

adj 0.554

superhigh

adj 0.553

hammered

adj 0.553

ice-cold

adj 0.552

boiling hot

adj 0.552

headstrong

adj 0.551

strong nuclear

adj 0.551

steel

adj 0.550

bone-shaking

adj 0.550

superdense

adj 0.550

industrial strength

adj 0.549

unshakable

adj 0.547

hardscrabble

adj 0.547

flinty

adj 0.545