nastier

/N AE1 S T IY0 ER0/
adjective
  1. 1

    Dirty, filthy.

  2. 2

    Contemptible, unpleasant (of a person).

  3. 3

    Objectionable, unpleasant (of a thing); repellent, offensive.

  4. 4

    Indecent or offensive; obscene, lewd.

  5. 5

    Spiteful, unkind.

  6. 6

    Awkward, difficult to navigate; dangerous.

  7. 7

    Grave or dangerous (of an accident, illness etc.).

  8. 8

    Formidable, terrific; wicked.

Source: https://en.wiktionary.org/wiki/nastier, https://en.wiktionary.org/wiki/nasty