combustible

noun 0.802

nonflammable

noun 0.736

inflammable

noun 0.678

combustibility

noun 0.677

flammable

noun 0.663

burnable

noun 0.622

combustor

noun 0.608

combustion

noun 0.602

inert

noun 0.589

incorruptible

noun 0.586

indigestible

noun 0.585

incendiary

noun 0.581

fire retardant

noun 0.570

inflammability

noun 0.567

incomprehensible

noun 0.565

insoluble

noun 0.562

flame-retardant

noun 0.561

inedible

noun 0.556

incomparable

noun 0.555

incapable

noun 0.554

imperishable

noun 0.554

incinerator

noun 0.553

immovable

noun 0.551

impenetrable

noun 0.550

inanimate

noun 0.547

incompressibility

noun 0.547

inflammable air

noun 0.545

nonperishable

noun 0.542

indestructibility

noun 0.541

flammability

noun 0.540

intumescent

noun 0.540

nonconductor

noun 0.539

incommensurable

noun 0.533

inert gas

noun 0.533

extinguisher

noun 0.529

inertinite

noun 0.529

invar

noun 0.527

inorganic

noun 0.527

invincible

noun 0.526

incandescent

noun 0.520

uninsurable

noun 0.519

nondegradable

noun 0.519

undatable

noun 0.518

combustion engine

noun 0.518

incorrigible

noun 0.517

indeclinable

noun 0.517

insulator

noun 0.515

inaccessible

noun 0.513

incienso

noun 0.511

inadmissible

noun 0.510

nonmetal

noun 0.509

intransigent

noun 0.508

incorruptibility

noun 0.508

inertness

noun 0.508

fireproofing

noun 0.507

incompatible

noun 0.505

fusible

noun 0.505

indigestibility

noun 0.504

spontaneous combustion

noun 0.504

internal combustion

noun 0.504

invariable

noun 0.503

infallible

noun 0.503

antiknock

noun 0.503

insulant

noun 0.502

incendiarism

noun 0.501

nonrenewable

noun 0.501

impregnability

noun 0.501