severe

/səˈvɪr/
adjective
  1. Very bad, serious, or extreme in degree.
    • The storm caused severe damage to the coastal town.
    • The country is facing a severe shortage of clean drinking water.
    • She was admitted to the hospital with severe chest pain.
  2. Strict or harsh in manner or treatment.
    • The judge imposed a severe sentence for the crime.
    • My grandmother was known for her severe but fair discipline.
    • The teacher gave a severe warning to students who were cheating.
  3. Very plain or simple, without decoration.
    • The building's severe architecture reflected the minimalist style.
    • She wore a severe black dress with no jewelry.
    • The office had a severe design with white walls and metal furniture.
Antonyms