severer

/S EH1 V IH0 R ER0/
adjective
  1. 1

    Very bad or intense.

  2. 2

    Strict or harsh.

    โ€œa severe taskmasterโ€

  3. 3

    Sober, plain in appearance, austere.

    โ€œa severe old maiden auntโ€

Source: https://en.wiktionary.org/wiki/severe, https://en.wiktionary.org/wiki/severer