undemolishable
Impossible to destroy
Undemolishable means incapable of being demolished or destroyed.
The word typically describes buildings or structures so solidly built they resist all attempts at tearing them down: The old fortress proved undemolishable even with modern equipment.
Figuratively, it can describe ideas, reputations, or arguments that withstand all attacks.
Unable to be affected
- invulnerableImmune to all harm
- invincibleIncapable of being defeated
- imperishableLasting forever, indestructible
- adamantineUtterly impervious, unshakeable
impregnable · unassailable · inviolable · unbreakable · shatterproof · bulletproof · bombproof · armored
Fixed without end
- lastingContinuing through time
- eternalLasting without end
- perpetualLasting without interruption
- everlastingLasting for all time
timeless · ageless · immutable · unchanging · indelible · abiding · persistent · steadfast
Heavily defended military structure
- citadelFortified urban stronghold
- strongholdFortified place of defense
- bastionFortified defensive position
- rampartsProtective fortress walls
battlements · bulwark · castle · keep · redoubt · bunker · garrison · palisade
Able to withstand use
- robustStrong and durable
- toughDurable and strong
- hardyAble to endure difficulty
- resistantWithstanding external forces
tenacious · withstanding · rebounding · survivable · weatherproof · ruggedized · shock-resistant · fail-safe
Made more resistant
- load-bearingSustaining structural mass
- concreteSolid building mixture
- masonryBuilding with mortared blocks
- bedrockSolid stone underground
foundation · pillar · buttress · girder · beam · truss · monolithic · fireproof
impervious
Unable to be affected
- invulnerableImmune to all harm
- invincibleIncapable of being defeated
- imperishableLasting forever, indestructible
adamantine · impregnable · unassailable · inviolable · unbreakable · shatterproof · bulletproof · bombproof · armored · ironclad
permanent
Fixed without end
everlasting · timeless · ageless · immutable · unchanging · indelible · abiding · persistent · steadfast · unwavering
fortress
Heavily defended military structure
- citadelFortified urban stronghold
- strongholdFortified place of defense
- bastionFortified defensive position
ramparts · battlements · bulwark · castle · keep · redoubt · bunker · garrison · palisade · barbican
durable
Able to withstand use
resistant · tenacious · withstanding · rebounding · survivable · weatherproof · ruggedized · shock-resistant · fail-safe · heavy-duty
reinforced
Made more resistant
- load-bearingSustaining structural mass
- concreteSolid building mixture
- masonryBuilding with mortared blocks
bedrock · foundation · pillar · buttress · girder · beam · truss · monolithic · fireproof · anchored
undemolishabledestructible
Capable of being ruined
fragile · breakable · flimsy · collapsible · crumbling
undemolishabledestructible
Capable of being ruined
temporary · impermanent · ephemeral · transient · fleeting
demolish, demolished, demolisher, demolishing, demolishment, demolition, undemolished