bombproof

adj 0.851

ironclad

adj 0.740

unbreakable

adj 0.716

invulnerable

adj 0.698

unassailable

adj 0.693

shatterproof

adj 0.688

invincible

adj 0.681

impregnable

adj 0.679

fireproof

adj 0.676

indestructible

adj 0.665

shockproof

adj 0.659

heatproof

adj 0.651

unshakable

adj 0.647

adamantine

adj 0.642

foolproof

adj 0.640

undefeatable

adj 0.639

iron-hearted

adj 0.632

unimpeachable

adj 0.624

tamperproof

adj 0.624

sure-fire

adj 0.622

armored

adj 0.618

infallible

adj 0.610

unbroken

adj 0.610

weatherproof

adj 0.608

unprotectable

adj 0.606

unbeatable

adj 0.606

unstoppable

adj 0.600

rustproof

adj 0.599

inviolable

adj 0.597

watertight

adj 0.596

windproof

adj 0.596

unquestionable

adj 0.595

rock hard

adj 0.595

rainproof

adj 0.594

infrangible

adj 0.592

impervious

adj 0.591

waterproof

adj 0.591

armoured

adj 0.589

unchallengeable

adj 0.589

unfalsifiable

adj 0.584

immune

adj 0.583

unshattered

adj 0.581

uncuttable

adj 0.580

inexpugnable

adj 0.580

indefeasible

adj 0.579

irrefutable

adj 0.579

airtight

adj 0.573

overproof

adj 0.572

undefeated

adj 0.572

unsusceptible

adj 0.571

robust

adj 0.571

hard as nails

adj 0.570

unflappable

adj 0.569

soundproof

adj 0.566

explosion-proof

adj 0.564

sturdy

adj 0.562

unsinkable

adj 0.562

unerring

adj 0.562

secure

adj 0.561

resistant

adj 0.561

unbeaten

adj 0.559

steady as a rock

adj 0.557

unflinching

adj 0.556

proof

adj 0.556

indubitable

adj 0.556

fearless

adj 0.554

fail-safe

adj 0.553

fire-resistant

adj 0.551

ironbound

adj 0.551

unarmored

adj 0.551

undeterrable

adj 0.550

waterproofed

adj 0.550

flawless

adj 0.549

unarguable

adj 0.548

guaranteed

adj 0.548

strong

adj 0.548

unassailed

adj 0.548

irrebuttable

adj 0.547

stone cold

adj 0.547

stainless

adj 0.547

unshaken

adj 0.547

childproof

adj 0.546

unwavering

adj 0.544

flameproof

adj 0.544

impeccable

adj 0.543

uncheckable

adj 0.542

solid

adj 0.542

bullet-headed

adj 0.542

impenetrable

adj 0.541

unfailing

adj 0.541

copper-bottomed

adj 0.540

insusceptible

adj 0.540

undoubtable

adj 0.539

undoubted

adj 0.538

no-fail

adj 0.538

leakproof

adj 0.537

up-armored

adj 0.537

incontestable

adj 0.537

immutable

adj 0.536

dustproof

adj 0.535