bastioned

adj 0.624

castled

adj 0.596

impregnable

adj 0.593

forted

adj 0.593

walled

adj 0.580

battlemented

adj 0.565

forte

adj 0.565

stonelike

adj 0.564

ringfenced

adj 0.562

fortis

adj 0.558

sturdy

adj 0.556

ironclad

adj 0.554

rockbound

adj 0.554

fenced

adj 0.553

turreted

adj 0.552

buttressed

adj 0.551

iron-hearted

adj 0.545

inexpugnable

adj 0.539

fenced in

adj 0.537

armored

adj 0.537

castellated

adj 0.536

ironbound

adj 0.536

formidable

adj 0.531

armoured

adj 0.530

bombproof

adj 0.529

casemated

adj 0.523

boxlike

adj 0.522

secure

adj 0.520

brassbound

adj 0.518

towered

adj 0.517

bricklike

adj 0.516

rock-like

adj 0.512

hardened

adj 0.511

rock-ribbed

adj 0.511

defensive

adj 0.511

statuelike

adj 0.507

maximum-security

adj 0.506

staunch

adj 0.503

defensible

adj 0.502

strong

adj 0.502

stalwart

adj 0.500