superfast

adj 0.837

lightning

adj 0.815

quick as a flash

adj 0.807

lightninglike

adj 0.806

fast

adj 0.755

speedy

adj 0.734

ultrafast

adj 0.717

superspeed

adj 0.696

quick

adj 0.678

rapid fire

adj 0.662

rapid

adj 0.658

quick on the draw

adj 0.653

quick off the mark

adj 0.650

faster-than-light

adj 0.650

lightfast

adj 0.647

quicksilver

adj 0.645

swift

adj 0.639

prestissimo

adj 0.636

instant

adj 0.633

blazing

adj 0.629

supersonic

adj 0.623

instantaneous

adj 0.607

flash

adj 0.605

quick on the uptake

adj 0.600

nimble

adj 0.600

hair-trigger

adj 0.595

expeditious

adj 0.594

speeding

adj 0.584

mile-a-minute

adj 0.584

accelerated

adj 0.582

sharp as a tack

adj 0.577

thundering

adj 0.576

sharpish

adj 0.574

speeded

adj 0.571

thunderstruck

adj 0.570

turbo

adj 0.569

fast-flowing

adj 0.569

superluminal

adj 0.568

accelerate

adj 0.564

quick-sighted

adj 0.561

smart as a whip

adj 0.561

hasty

adj 0.559

hypervelocity

adj 0.559

brisk

adj 0.558

flashy

adj 0.556

hotfoot

adj 0.553

hypersonic

adj 0.552

light as a feather

adj 0.551

quick-tempered

adj 0.546

whip-smart

adj 0.540

breakneck

adj 0.539

light

adj 0.539

feather-light

adj 0.539

ultrashort

adj 0.539

expedited

adj 0.538

quick-setting

adj 0.537

light-fingered

adj 0.537

snappy

adj 0.537

dashing

adj 0.537

immediate

adj 0.536

sudden

adj 0.536

rushing

adj 0.536

short order

adj 0.535

rush

adj 0.532

thunderous

adj 0.531

tachy

adj 0.530

full speed ahead

adj 0.530

hellfire

adj 0.529

hotshot

adj 0.528

agile

adj 0.528

electrifying

adj 0.528

white-hot

adj 0.527

expedite

adj 0.527

whirlwind

adj 0.526

superhot

adj 0.526

sonic

adj 0.524

ultralight

adj 0.521

furious

adj 0.521

flying

adj 0.520

bolt upright

adj 0.515

out like a light

adj 0.514

slick

adj 0.513

supercharged

adj 0.513

whizzing

adj 0.512

brilliant

adj 0.512

slam-bang

adj 0.512

supersmart

adj 0.511

electric

adj 0.510

laserlike

adj 0.509

hot-wired

adj 0.508

zippy

adj 0.507

raced

adj 0.506

rushed

adj 0.506

hurried

adj 0.506

sparky

adj 0.505

silver-lined

adj 0.503

dashed

adj 0.503

allegro

adj 0.502

straightaway

adj 0.502

ninja

adj 0.501