Cool Words That Start With S (With Definitions)

Cool words can add a touch of personality and flair to any conversation or piece of writing.

Whether you’re looking for a unique adjective to describe something or just want to expand your vocabulary, words that start with S offer a plethora of options.

From sophisticated and scallywag to serendipity and smithereens, there’s a cool S word for every occasion.

Below is a list of some of the coolest words that start with S, along with a brief description of each one.

cool words that start with s

Cool Words That Start With S

  • Sagacious: having or showing keen mental discernment, good judgement, and farsightedness.
  • Salubrious: promoting health and well-being; wholesome.
  • Sanguine: cheerfully optimistic and confident; hopeful and trusting.
  • Savvy: showing knowledge or understanding; shrewdness in practical matters.
  • Scallywag: a mischievous person, especially a child; rogue or rascal.


  • Schlep: to drag or carry something with great effort; to haul reluctantly.
  • Scintillate: to sparkle or shine brightly; to emit flashes of light.
  • Scintillating: having an excitingly brilliant quality or appearance; sparkling.
  • Scrumptious: extremely pleasing to the taste; delicious.
  • Serendipitous: having a pleasant surprise; lucky to find something good without looking for it.


  • Serendipity : the occurrence of happy or beneficial events by chance.
  • Serene: calmly peaceful and untroubled; tranquil.
  • Shipshape: in order; neat, tidy, and well organized.
  • Silhouette : the outline or general shape of something, especially a person’s face or body, filled in with black or a dark color.
  • Sleek: elegant, stylish and streamlined in appearance or design.


  • Slick: smooth and glossy; cleverly dexterous and skillful in a way that is sometimes deceptive.
  • Smithereens: small pieces, shards or fragments; in total disarray.
  • Smorgasbord: a variety of dishes, especially hot and cold hors d’oeuvres or salads, set out for general consumption.
  • Sonorous : producing a deep, rich sound; imposingly grand and impressive.
  • Soothe: to calm, comfort or reassure; to lessen pain or distress.


  • Soothing: calming, comforting or reassuring; having a gentle and peaceful effect.
  • Sophisticated: having or showing refined knowledge, good taste, or polish in manners or conversation.
  • Sparkle: emitting or reflecting flashes of light; radiating joy and vivacity.
  • Spellbinding: so captivating as to mesmerize; having a powerful, gripping effect.
  • Spiffy: stylishly and smartly dressed; neat and trim.
  • Spirited: full of energy and enthusiasm; having a bold or brave spirit.


  • Splendid: magnificent, grand, and imposing in appearance; impressive or admirable in the highest degree.
  • Splendiferous: splendid in appearance or effect; grand and impressive.
  • Sprightly: lively, animated, and full of energy; having a brisk and vigorous spirit.
  • Spruce: neat and trim; smartly dressed.
  • Spry: nimble and alert; quick or brisk in movement or action.


  • Squeegee: a tool with a rubber blade for wiping the surface of glass to remove moisture or other substances.
  • Stimulating: arousing interest, activity, or emotion; invigorating and enlivening.
  • Stoke: to stir up or intensify; to fan the flames of enthusiasm.
  • Stunning: extremely impressive; beautiful and remarkable.
  • Stupefy: to astonish, amaze or bewilder; to render senseless or speechless.
  • Stupendous: extremely impressive; extraordinary or marvelous.


  • Sublime: having a lofty, grandeur beauty; being beyond ordinary comprehension.
  • Sultry: having an atmosphere of intense heat and humidity; steamy and sweltering.
  • Sumptuous: extremely luxurious; having an impressively high quality or value.
  • Superb: excellent in every way; surpassing other things of the same kind.
  • Supreme: highest in importance, rank, or degree; unsurpassed in excellence.


  • Supremely: to the highest degree; beyond compare.
  • Surreal : having the qualities of surrealism; bizarre, dreamlike, or uncanny.
  • Svelte: slender and graceful in form or figure; trim and attractive.
  • Swanky – stylishly luxurious or expensive; posh and elegant.
  • Swashbuckling: adventurous, daring and flamboyant; having a brave and bold spirit.
  • Synergistic: working together to achieve an effect greater than the sum of their separate parts.


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