fortress

noun 0.707

bulwark

noun 0.687

citadel

noun 0.630

bunker

noun 0.608

garrison

noun 0.602

outpost

noun 0.591

fort

noun 0.589

strongpoint

noun 0.587

rampart

noun 0.586

blockhouse

noun 0.580

battlement

noun 0.578

cornerstone

noun 0.577

barbican

noun 0.570

buttress

noun 0.568

redoubt

noun 0.567

safe haven

noun 0.562

sanctum

noun 0.559

enclave

noun 0.554

bridgehead

noun 0.554

battleground

noun 0.549

barricade

noun 0.548

bolster

noun 0.547

basis

noun 0.545

battlefront

noun 0.540

refuge

noun 0.540

sentry

noun 0.538

turret

noun 0.536

castle

noun 0.536

fundament

noun 0.535

mainstay

noun 0.533

baza

noun 0.533

barrier

noun 0.532

fallout shelter

noun 0.528

arsenal

noun 0.528

foundation

noun 0.527

defender

noun 0.527

sanctuary

noun 0.525

guard

noun 0.525

stalwart

noun 0.525

backstop

noun 0.525

garrison town

noun 0.523

beachhead

noun 0.522

bolthole

noun 0.521

bolstering

noun 0.521

shelter

noun 0.520

anchor

noun 0.519

barrack

noun 0.519

reserve

noun 0.519

entrenchment

noun 0.519

boundary

noun 0.519

beacon

noun 0.518

bower anchor

noun 0.516

breastwork

noun 0.516

main guard

noun 0.515

barracks

noun 0.514

watchtower

noun 0.514

fortified

noun 0.514

anchorhold

noun 0.514

bench

noun 0.513

presidio

noun 0.513

anchorage

noun 0.513

casemate

noun 0.513

borderland

noun 0.512

tower

noun 0.511

foothold

noun 0.509

guardhouse

noun 0.509

strongbox

noun 0.509

forte

noun 0.508

toehold

noun 0.506

haven

noun 0.506

bouncer

noun 0.506

guardian

noun 0.506

sandcastle

noun 0.506

vault

noun 0.506

breakwater

noun 0.505

bomb shelter

noun 0.503

perch

noun 0.503

backbone

noun 0.503

defence

noun 0.502

bawn

noun 0.501

bollard

noun 0.501

baluster

noun 0.501