undoable

adj 0.799

unachievable

adj 0.753

out of the question

adj 0.733

unobtainable

adj 0.718

improbable

adj 0.710

infeasible

adj 0.708

inconceivable

adj 0.705

incompossible

adj 0.705

unthinkable

adj 0.705

unrealizable

adj 0.704

impracticable

adj 0.699

unattainable

adj 0.698

unfeasible

adj 0.690

impassable

adj 0.689

unimaginable

adj 0.677

unconceivable

adj 0.673

implausible

adj 0.671

impractical

adj 0.669

unreachable

adj 0.668

imaginable

adj 0.668

unable

adj 0.667

insolvable

adj 0.664

impassible

adj 0.662

thinkable

adj 0.653

imposable

adj 0.651

unworkable

adj 0.649

insuperable

adj 0.648

unpassable

adj 0.648

unbelievable

adj 0.648

hopeless

adj 0.640

inaccessible

adj 0.635

unwinnable

adj 0.635

insurmountable

adj 0.633

unfixable

adj 0.630

unrealistic

adj 0.628

unpayable

adj 0.625

possible

adj 0.624

incomputable

adj 0.623

unbeatable

adj 0.619

unstoppable

adj 0.617

incompatible

adj 0.617

inoperable

adj 0.616

unrecoverable

adj 0.616

unresolvable

adj 0.615

unreal

adj 0.614

unimprovable

adj 0.614

unbuildable

adj 0.613

incapable

adj 0.610

imaginary

adj 0.609

unplayable

adj 0.608

difficult

adj 0.607

invincible

adj 0.606

incredible

adj 0.605

inexistent

adj 0.604

incomparable

adj 0.603

unmasterable

adj 0.602

unfulfillable

adj 0.600

inescapable

adj 0.599

unbreakable

adj 0.596

unpractical

adj 0.596

impregnable

adj 0.596

insoluble

adj 0.594

unknowable

adj 0.594

undefeatable

adj 0.594

unfinishable

adj 0.593

unsayable

adj 0.593

noncomputable

adj 0.592

unlikely

adj 0.592

unmovable

adj 0.591

irresolvable

adj 0.590

ineliminable

adj 0.589

irresoluble

adj 0.589

incomprehensible

adj 0.588

untenable

adj 0.587

unreasonable

adj 0.587

imitable

adj 0.586

unguessable

adj 0.586

unmatchable

adj 0.586

unmeasurable

adj 0.585

unhittable

adj 0.585

uneatable

adj 0.584

unseeable

adj 0.582

irremediable

adj 0.581

inimitable

adj 0.581

unbridgeable

adj 0.580

irremovable

adj 0.580

incurable

adj 0.580

inviable

adj 0.580

uncatchable

adj 0.580

irreconcilable

adj 0.580

immovable

adj 0.579

unanswerable

adj 0.579

unsupportable

adj 0.579

immeasurable

adj 0.579

inexplicable

adj 0.578

impenetrable

adj 0.578

insupportable

adj 0.578

irresistible

adj 0.577

unavailable

adj 0.577

unapproachable

adj 0.575