Synonyms for Intense:

adj.

all (adjective)
vivid.
bright (adjective)
hued.
colorful (adjective)
garish, gaudy, shaded, chromatic, lurid, colored, High-colored, rich, vivid, stained, colorful, inky, tinted, hued, florid, dyed, spectral, rainbow-like, full-colored, bright-hued, painted, brilliant.
enthusiastic (adjective)
keen.
extreme (adjective)
extreme, severe, uttermost, excessive, drastic, radical.
forceful, severe; passionate (adjective)
excessive, full, consuming, deep, extraordinary, fervid, concentrated, vivid, exceptional, vehement, sharp, great, undue, bitter, intensive, impassioned, pungent, acute, keen, all-consuming, diligent, exaggerated, Heightened, strong, marked, exquisite, cutting, profound, shrill, extreme, strained, hard, harsh, powerful, biting, fierce, supreme, violent, earnest, stinging, intensified.
heavy (adjective)
Heightened.
loud (adjective)
tumultuous.
moving (adjective)
impassioned.
serious (adjective)
earnest, somber, sober, solemn, demure, sedate, grave, dignified, grim.
sharp (adjective)
sharp.
violent (adjective)
ferocious, broiling, violent, fighting, fierce, brawling, raging, tumultuous, savage, outrageous, abusive, frenzied, assaultive, vehement, furious, wild, uproarious.
wicked (adjective)
wicked.

n.

hysterical, tempestuous, soulful, histrionic. dramatic, enthralling, eventful, exhilarating, thrilling, exciting, fast, alive, exotic, desperate, compelling. dire, Heightened, heavy, awful. complicated, tough, surface, taxing, arduous, punishing, difficult, challenging, be an effort.

v.

intensified (verb)
fervid, shrill, forceful, bitter, Heightened, full, biting, marked, high-strung, great, impassioned, passionate, high-pitched, undue, stinging, pungent, powerful, serious, all-consuming, emotional, strenuous, exceptional, exaggerated, supreme, extraordinary, diligent, strained, hard.

Other synonyms:

hysterical, histrionic, tempestuous, Heightened, soulful. desperate. heavy. ardent
passionate.
intense
bitter.

Usage examples for intense

  1. It is curious to observe how differently the objects which call forth intense admiration in some minds will affect others. – Roughing it in the Bush by Susanna Moodie
  2. There was an intense pleasure in feeling how thoroughly she relied upon him. – Greene Ferne Farm by Richard Jefferies
  3. Sometimes the silence was intense and awful. – Bye-Ways by Robert Smythe Hichens