lightning fast

adj 0.807

quick

adj 0.730

quick on the draw

adj 0.730

quick off the mark

adj 0.726

superfast

adj 0.722

fast

adj 0.713

quick on the uptake

adj 0.697

speedy

adj 0.688

flash

adj 0.674

sharp as a tack

adj 0.672

quicksilver

adj 0.662

smart as a whip

adj 0.660

sharpish

adj 0.658

rapid

adj 0.645

swift

adj 0.638

instant

adj 0.635

rapid fire

adj 0.631

lightninglike

adj 0.618

ultrafast

adj 0.614

quick-sighted

adj 0.612

lightning

adj 0.609

flashy

adj 0.605

prestissimo

adj 0.599

snappy

adj 0.596

instantaneous

adj 0.592

expeditious

adj 0.590

whip-smart

adj 0.590

nimble

adj 0.589

brisk

adj 0.577

hasty

adj 0.575

superspeed

adj 0.573

blazing

adj 0.566

hair-trigger

adj 0.566

lightfast

adj 0.564

quick-tempered

adj 0.557

fast-flowing

adj 0.555

dashing

adj 0.554

mile-a-minute

adj 0.552

hotfoot

adj 0.551

out like a light

adj 0.551

dashed

adj 0.550

straightaway

adj 0.547

sudden

adj 0.545

immediate

adj 0.544

faster-than-light

adj 0.543

supersonic

adj 0.543

quick-setting

adj 0.540

keen as mustard

adj 0.540

light as a feather

adj 0.540

sure as shooting

adj 0.538

hotshot

adj 0.534

full speed ahead

adj 0.534

accelerated

adj 0.532

whizzing

adj 0.532

speeded

adj 0.531

snap

adj 0.530

hot off the press

adj 0.530

agile

adj 0.525

short order

adj 0.525

sharp

adj 0.524

sound as a bell

adj 0.523

allegro

adj 0.523

light-fingered

adj 0.523

get-rich-quick

adj 0.522

expedite

adj 0.522

rushed

adj 0.521

expedited

adj 0.518

adroit

adj 0.517

accelerate

adj 0.517

brilliant

adj 0.517

bright

adj 0.515

zippy

adj 0.515

rushing

adj 0.513

slam-bang

adj 0.512

short and sweet

adj 0.512

caught on the hop

adj 0.511

whizzy

adj 0.511

hurried

adj 0.510

rush

adj 0.510

easy as pie

adj 0.509

swish

adj 0.509

speeding

adj 0.509

deft

adj 0.508

blinky

adj 0.508

quiet as a mouse

adj 0.508

smooth as silk

adj 0.507

slick

adj 0.507

cute as a button

adj 0.506

right as rain

adj 0.505

busy as a bee

adj 0.504

hawk-eyed

adj 0.504

sparky

adj 0.503

spot on

adj 0.502

spiffy

adj 0.500