impregnable

adj 0.837

impenetrable

adj 0.751

unconquerable

adj 0.721

unassailable

adj 0.715

undefeatable

adj 0.701

invulnerable

adj 0.700

insuperable

adj 0.699

invincible

adj 0.697

inviolable

adj 0.692

infrangible

adj 0.684

indomitable

adj 0.675

insusceptible

adj 0.672

inexorable

adj 0.671

insurmountable

adj 0.669

incontestable

adj 0.664

unchallengeable

adj 0.664

irrefragable

adj 0.664

indefeasible

adj 0.663

indestructible

adj 0.662

unbeatable

adj 0.660

irrefutable

adj 0.651

impervious

adj 0.650

irresoluble

adj 0.646

indefensible

adj 0.645

inexpiable

adj 0.645

irrebuttable

adj 0.644

impermeable

adj 0.642

impassible

adj 0.641

impassable

adj 0.637

inextinguishable

adj 0.632

implacable

adj 0.632

unsusceptible

adj 0.631

inarguable

adj 0.625

inescapable

adj 0.624

unshakable

adj 0.622

unbreakable

adj 0.620

incontrovertible

adj 0.620

ineluctable

adj 0.620

indubitable

adj 0.619

indemonstrable

adj 0.618

unvanquished

adj 0.615

uncuttable

adj 0.614

unpassable

adj 0.613

unhittable

adj 0.613

unprotectable

adj 0.613

vincible

adj 0.610

inexplicable

adj 0.610

irresistible

adj 0.609

unappealable

adj 0.607

incombustible

adj 0.606

unconquered

adj 0.604

unimpeachable

adj 0.604

intractable

adj 0.603

undeterrable

adj 0.602

unamendable

adj 0.601

unstoppable

adj 0.601

unarguable

adj 0.601

inaccessible

adj 0.600

infallible

adj 0.598

ineradicable

adj 0.598

unsinkable

adj 0.597

ineffaceable

adj 0.597

unwinnable

adj 0.597

indefatigable

adj 0.597

indissoluble

adj 0.595

ineliminable

adj 0.593

inviolate

adj 0.592

indisputable

adj 0.591

resistible

adj 0.591

unimprovable

adj 0.590

ineducable

adj 0.589

irrigable

adj 0.589

incorruptible

adj 0.587

irrepressible

adj 0.587

imprescriptible

adj 0.584

intransigent

adj 0.584

untenable

adj 0.584

penetrable

adj 0.583

insolvable

adj 0.583

untameable

adj 0.582

inscrutable

adj 0.582

undoable

adj 0.582

uncatchable

adj 0.582

unanswerable

adj 0.581

unquenchable

adj 0.581

unsearchable

adj 0.581

irrecuperable

adj 0.581

unappeasable

adj 0.580

unmovable

adj 0.580

bulletproof

adj 0.580

unpardonable

adj 0.580

unfalsifiable

adj 0.579

inexpressible

adj 0.579

unrevisable

adj 0.579

unguessable

adj 0.578

inexhaustible

adj 0.577

unquestionable

adj 0.577

irresolvable

adj 0.576

unamenable

adj 0.574

inimitable

adj 0.571