abruptness

noun 0.744

sudden death

noun 0.714

unexpectedness

noun 0.687

rapidness

noun 0.647

instantaneousness

noun 0.643

precipitancy

noun 0.639

quickness

noun 0.625

hastiness

noun 0.623

rapidity

noun 0.606

surprising

noun 0.595

instantaneity

noun 0.594

impetuousness

noun 0.588

brusqueness

noun 0.581

swiftness

noun 0.580

speediness

noun 0.578

spontaneity

noun 0.577

hurriedness

noun 0.575

impetuosity

noun 0.573

simultaneousness

noun 0.572

acuteness

noun 0.568

momentariness

noun 0.566

unforeseen

noun 0.566

instancy

noun 0.565

capriciousness

noun 0.561

immediateness

noun 0.555

element of surprise

noun 0.554

surprise

noun 0.553

spur of the moment

noun 0.550

urgency

noun 0.548

unpredictability

noun 0.544

promptness

noun 0.542

explosiveness

noun 0.541

precipitant

noun 0.540

expeditiousness

noun 0.538

rashness

noun 0.537

briefness

noun 0.537

impulsiveness

noun 0.535

promptitude

noun 0.535

unusualness

noun 0.533

imminence

noun 0.531

immediacy

noun 0.530

simultaneity

noun 0.528

startling

noun 0.524

sudd

noun 0.522

fortuitousness

noun 0.522

gradualness

noun 0.519

instant

noun 0.519

shock

noun 0.518

acute

noun 0.516

shortness

noun 0.515

astonishment

noun 0.514

sudden infant death syndrome

noun 0.514

succinctness

noun 0.514

sureness

noun 0.514

briskness

noun 0.513

ominousness

noun 0.511

outburst

noun 0.510

suchness

noun 0.510

brashness

noun 0.510

impulsivity

noun 0.509

thunderclap

noun 0.508

rapid

noun 0.508

strangeness

noun 0.508

accidentality

noun 0.506

haphazardness

noun 0.506

decisiveness

noun 0.506

randomness

noun 0.505

bolt from the blue

noun 0.505

shocking

noun 0.505

emergence

noun 0.504

fleetingness

noun 0.504

miraculousness

noun 0.504

irruption

noun 0.501

impending

noun 0.501

celerity

noun 0.501