WordRel.com

• causing fear or anxiety by threatening great harm

  synonym	dangerousgravegrievouslife-threateningserious
  derivation	severeness
  similar	critical

• intensely or extremely bad or unpleasant in degree or quality

  synonym	terriblewicked
  derivation	severenessseverenessseverity
  similar	intense

• severely simple

  synonym	austerestarkstern
  derivation	severeness
  similar	plain

• very strong or vigorous

  synonym	hardknockout
  derivation	severeness
  similar	strong

• very bad in degree or extent

  derivation	severenessseverity
  similar	bad

• unsparing and uncompromising in discipline or judgment

  synonym	spartan
  derivation	severenessseverity
  similar	nonindulgentstrict