A person who has a nasty or unethical character undeserving of respect
(Noun)
Synonyms:
  1. insects
  2. pediculosis
  3. phthiriasis
  4. worms
  5. mites
  6. rats
  7. scoundrels
  8. knaves
Synonyms:
(Adjective)
  1. pedicular
  2. pediculous
  3. verminous