impermeable

adj 0.793

penetrable

adj 0.779

impregnable

adj 0.768

impervious

adj 0.754

inexpugnable

adj 0.751

impassable

adj 0.715

impassible

adj 0.712

nonpermeable

adj 0.690

unpassable

adj 0.673

insusceptible

adj 0.671

inaccessible

adj 0.658

insuperable

adj 0.645

unapproachable

adj 0.622

impalpable

adj 0.619

insurmountable

adj 0.618

irrefragable

adj 0.617

inscrutable

adj 0.617

irresoluble

adj 0.616

unsusceptible

adj 0.614

invulnerable

adj 0.614

inviolable

adj 0.611

insolvable

adj 0.607

insoluble

adj 0.602

inassimilable

adj 0.602

imperforate

adj 0.602

implacable

adj 0.602

unhittable

adj 0.599

incompressible

adj 0.599

nonporous

adj 0.597

infrangible

adj 0.595

unbreakable

adj 0.594

irrigable

adj 0.594

unanalysable

adj 0.594

unfathomable

adj 0.592

uncuttable

adj 0.590

undatable

adj 0.590

indemonstrable

adj 0.588

inexorable

adj 0.587

unsearchable

adj 0.587

incomprehensible

adj 0.582

indissoluble

adj 0.581

unbridgeable

adj 0.580

intransparent

adj 0.579

unreachable

adj 0.578

impossible

adj 0.578

unguessable

adj 0.578

intractable

adj 0.578

unconquerable

adj 0.577

inescapable

adj 0.577

invincible

adj 0.576

inexpressible

adj 0.574

penetrative

adj 0.574

unmovable

adj 0.574

penetrating

adj 0.573

ungraspable

adj 0.573

unassailable

adj 0.572

undoable

adj 0.571

ineducable

adj 0.571

unseeable

adj 0.571

unprotectable

adj 0.569

incombustible

adj 0.568

indestructible

adj 0.568

untranslatable

adj 0.567

incapable

adj 0.567

nontransparent

adj 0.567

ineluctable

adj 0.566

irrecuperable

adj 0.564

inextricable

adj 0.564

intransigent

adj 0.562

untractable

adj 0.561

permeable

adj 0.560

unamendable

adj 0.560

untellable

adj 0.560

incomputable

adj 0.559

unappealable

adj 0.559

immovable

adj 0.558

impressible

adj 0.557

incorruptible

adj 0.556

unassimilable

adj 0.556

unthinkable

adj 0.556

imperceptive

adj 0.554

undefeatable

adj 0.554

unmoveable

adj 0.553

uncatchable

adj 0.552

unyielding

adj 0.552

immiscible

adj 0.551

adamantine

adj 0.550

unanswerable

adj 0.550

unattainable

adj 0.549

unobtainable

adj 0.549

imponderable

adj 0.548

unchallengeable

adj 0.548

unpardonable

adj 0.548

indiscernible

adj 0.546

irremovable

adj 0.546

watertight

adj 0.546

opaque

adj 0.545

indomitable

adj 0.545

impracticable

adj 0.545

unbeatable

adj 0.545