Synonyms for Flash:

adj.

all (adjective)
brassy, cheap, flashy, garish, gaudy, gimcrack, loud, meretricious, tacky, tatty, tawdry, trashy.

n.

abduct, abet, blackmail, bootleg, burst, case, commission, commit, coruscation, counterfeit, dazzle, defraud, display, extort, flicker, glance, glare, glimmer, glisten, imprint, impulse, pencil, phosphorescence, ray, reflection, shimmer, spark, streak, stream, vision. at once, coruscate, fast, glister, headlong, instantly, on-the-spot, promptly, spangle, straight, suddenly, straight away, right now. belief, commitment, concept, continue, faith, idea, ideal, philosophy, principle, theory, thought. advise, barrel, bolt, bucket, bustle, deliver, divulge, festinate, fly, hasten, highball, hotfoot, hurry, hustle, move, nip, pelt, point out, race, relay, rip, rocket, run, rush, sail, scour, speed, sprint, tell, trot, whirl, whisk, whiz, wing, zip, zoom, give someone to understand (that), let someone know. activate, actuate, brandish, coax, control, crank, disport, eject, energize, engage, exhibit, expose, flick, parade, show, sport. aperture, boom, camcorder, camera, cartridge, celluloid, darkroom, developer, Asa, digicam. appear, appearance, emergence, loom, reappear, resurface, take shape, rear its (ugly) head. costly, exclusive, expensive, extravagant, high-class, luxurious, pricey, select, sumptuous. fit, flush, outburst, spasm, spurt, twinge. gallop, outpace, surge, be quick on your feet. catch the light. radiance. boast, flamboyance, hubris, one-upmanship, pretension, swagger, grandstanding, self-promotion. boastful, bombastic, dramatic, flamboyant, grand, grandly, ostentatious, trophy, BLING. break through, crop up, emerge, erupt, pop up, shoot up, spring, spring up, descend on, come and go. chromatic, color, color scheme, coloring, colouring, contrast, darkness, depth, discoloration. clear, crease, creep, cross, crumple, express, falter, furrow. dawn, go through, occupy, strike, think, occur to, cross someone's mind, enter your mind/head. beam (noun)
ray.
demonstration (noun)
display, swank.
flash (noun)
blink, blink of an eye, brassy, cheap, dart, dash, flare, flash lamp, flashbulb, flashgun, flashing, flashy, flaunt, garish, gaudy, gimcrack, in poor taste, instant, jiffy, loud, meretricious, new york minute, news bulletin, newsflash, ostentate, photoflash, scoot, scud, shoot, split second, swank, tacky, tasteless, tatty, tawdry, trashy, trice, twinkle, twinkling, wink, winkle.
in a flash (noun)
expensive, gaudy, ostentatious.
instant, split second (noun)
jiffy, outburst, show, trice.
light (noun)
beam, blaze, brightness, brilliance, gleam, glint, glitter, glow, illumination, incandescence, light, lucidity, luminousness, luster, radiation, scintillation, shine, sparkle.
news (noun)
account, announcement, bulletin, communication, dispatch, epistle, gossip, information, message, news, notice, release, report, rumor, statement.
ostentation (noun)
flamboyance.
publication (noun)
release.
shimmer, flicker (noun)
beam, blaze, burst, coruscation, dazzle, flare, glance, glare, gleam, glimmer, glint, glisten, glitter, glow, illumination, imprint, impulse, incandescence, luster, phosphorescence, radiation, ray, reflection, scintillation, shine, spark, sparkle, streak, stream, twinkle, twinkling, vision.
split second (noun)
blink of an eye.
suddenness (noun)
haste, heartbeat, immediacy, instantaneousness, quickness, suddenness, trice, twinkling.

v.

light (verb)
fire, flare, flood, fluoresce, illuminate, incandesce, radiate, scintillate, spot.
move fast and display (verb)
bolt, brandish, dart, dash, disport, exhibit, expose, flaunt, fly, parade, race, shoot, speed, spring, zoom.
perception (verb)
blink, twinkle, wink, winkle.
shimmer, flicker (verb)
blink, coruscate, incandesce, light, radiate, scintillate, spangle.

Other synonyms:

New York minute
new york minute.
activate, actuate, boastful, bombastic, camera, coax, color scheme, coruscate, coruscation, eject, emerge, festinate, flick, flush, glister, grandly, hubris, loom, one-upmanship, ostentatious, radiance, reappear, grandstanding, occur to, self-promotion. appearance, boast, bustle, chromatic, contrast, control, crank, crumple, dazzle, discoloration, disport, emergence, energize, engage, exhibit, expose, flamboyant, highball, hotfoot, impulse, pretension, resurface, rocket, rush, swagger, trophy, twinge, whisk, zoom, BLING. bolt, brandish, coloring, creep, falter, hasten, rip, sail, sprint, stream. bucket, dawn, dramatic, grand, surge, whiz. crease, furrow, hurry, hustle, nip, parade, whirl. appear, display, occupy. fly, run, show. think. color, depth, go through. express, fit. cross. strike. clear. glimpse
glance.
glisten
glisten.
glitter
spark.
reveal
expose.
shine
glisten.
zoom
shoot up.
Other relevant words:
abduct, abet, activate, actuate, advise, aperture, appear, appearance, barrel, belief, blackmail, blink, blink of an eye, boast, boastful, bolt, bombastic, boom, bootleg, brandish, brassy, bucket, burst, bustle, camcorder, camera, cartridge, case, celluloid, cheap, chromatic, clear, coax, color, coloring, colouring, commission, commit, commitment, concept, continue, contrast, control, coruscate, coruscation, costly, counterfeit, crank, crease, creep, cross, crumple, darkroom, dart, dash, dawn, dazzle, defraud, deliver, depth, developer, discoloration, display, disport, divulge, dramatic, eject, emerge, emergence, energize, engage, erupt, exclusive, exhibit, expensive, expose, express, extort, extravagant, faith, falter, fast, festinate, fit, flamboyance, flamboyant, flash lamp, flashbulb, flashgun, flashing, flashy, flaunt, flick, flicker, flush, fly, furrow, gallop, garish, gaudy, gimcrack, glance, glare, glimmer, glisten, glister, grand, grandly, hasten, headlong, high-class, highball, hotfoot, hubris, hurry, hustle, idea, ideal, imprint, impulse, in poor taste, instant, instantly, jiffy, loom, loud, luxurious, meretricious, move, new york minute, news bulletin, newsflash, nip, occupy, on-the-spot, one-upmanship, ostentate, ostentatious, outburst, outpace, parade, pelt, pencil, philosophy, phosphorescence, photoflash, pop up, pretension, pricey, principle, promptly, race, radiance, ray, reappear, reflection, relay, resurface, rip, rocket, run, rush, sail, scoot, scour, scud, select, shimmer, shoot, show, spangle, spark, spasm, speed, split second, sport, spring, spring up, sprint, spurt, straight, streak, stream, strike, suddenly, sumptuous, surge, swagger, swank, tacky, tasteless, tatty, tawdry, tell, theory, think, thought, trashy, trophy, trot, twinge, twinkle, vision, whirl, whisk, whiz, wing, wink, winkle, zip, zoom, Asa, BLING, grandstanding, digicam, self-promotion.

Usage examples for flash

  1. " It had to do with the flash – Recalled to Life by Grant Allen
  2. My eyes can flash fire, and his can't. – The Patchwork Girl of Oz by L. Frank Baum
  3. He's the best I have by a long way, although some people prefer Flash – The Sweep Winner by Nat Gould