Synonyms for Unethical behavior:

• n.

  •dirty tricks (noun)
  • skullduggery,
  • dirty pool,
  • funny business,
  • malicious tactics,
  • shady business,
  • monkey business.

• Other synonyms:

  •n.
  • dirty tricks,
  • skullduggery,
  • funny business,
  • malicious tactics,
  • shady business.