Serious Synonyms


Serious Synonyms in Adjective Form

  • difficult, complicated, complex, demanding, laborious, exacting, strenuous, burdensome, onerous, painful, exhausting, intricate, troublesome, knotty, involved.
  • grave, earnest, sincere, thoughtful, sober, pensive, staid, heavy, solemn, grim, somber.
  • important, far-reaching, profound, consequential, long-range, weighty, major, decisive, urgent, vital, momentous, basic, fundamental, considerable, influential, appreciable, radical.
  • severe, dangerous, critical, dire, fearful, acute, mortal, lethal, deadly, virulent, life-and-death, hazardous, perilous, alarming.

Serious Synonym Links: severe, dangerous, critical, dire, fearful, acute, mortal, lethal, deadly, virulent, hazardous, perilous, alarming,

View available Serious Antonyms