noun

1. the quality or condition of being severe; specif.,
   1. strictness; harshness
   2. gravity, as of expression
   3. rigid accuracy
   4. extreme plainness or restraint, as in style
   5. keenness, as of pain; intensity
   6. rigorous or trying character
2. pl. severities -·ties something severe, as a punishment

Etymology: Fr sévérité < L severitas